TEXAS INSTRUMENTS TPS2045A, TPS2046A, TPS2047A, TPS2048A, TPS2055A Technical data

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1 2 3 4

8 7 6 5

GND

IN IN

†

OUT OUT OUT OC

TPS2045A, TPS2055A

D PACKAGE

(TOP VIEW)

1 2 3 4

8 7 6 5

GND

EN1

†

EN2

†

OC1 OUT1 OUT2 OC2

TPS2046A, TPS2056A

D PACKAGE

(TOP VIEW)

1 2 3 4 5 6 7 8

16 15 14 13 12 11 10

GNDA

IN1

EN1

†

EN2

†

GNDB

IN2

EN3

†

EN4

†

OC1 OUT1 OUT2 OC2 OC3 OUT3 OUT4 OC4

TPS2048A, TPS2058A

D PACKAGE

(TOP VIEW)

†

All enable inputs are active high for the TPS205xA series.

NC – No connect

1 2 3 4 5 6 7 8

16 15 14 13 12 11 10

GNDA

IN1

EN1

†

EN2

†

GNDB

IN2

EN3

†

OC1 OUT1 OUT2 OC2 OC3 OUT3 NC NC

TPS2047A, TPS2057A

D PACKAGE

(TOP VIEW)

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CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

FEATURES

• 80-m Ω High-Side MOSFET Switch

• 250 mA Continuous Current Per Channel

• Independent Thermal and Short-Circuit

Protection With Overcurrent Logic Output

• Operating Range: 2.7-V to 5.5-V

• CMOS- and TTL-Compatible Enable Inputs

• 2.5-ms Typical Rise Time

• Undervoltage Lockout

• 10 µ A Maximum Standby Supply Current

for Single and Dual (20 µ A for Triple and Quad)

• Bidirectional Switch

• Ambient Temperature Range, 0 ° C to 85 ° C

• ESD Protection

TPS2045A , , TPS2046A

TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

DESCRIPTION

The TPS2045A through TPS2048A and TPS2055A through TPS2058A power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered.

These devices incorporate 80-m Ω N-channel MOSFET high-side power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by an independent logic enable input. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V.

When the output load exceeds the current-limit threshold or a short is present, these devices limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent ( OCx) logic output low. When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present. These power-distribution switches are designed to current limit at

0.5 A.

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

www.ti.com

TPS2045A , , TPS2046A TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

AVAILABLE OPTIONS

RECOMMENDED PACKAGED DEVICES

0 ° C to 85 ° C 0.25 0.5

(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

website at www.ti.com .

(2) The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2045ADR)

ENABLE CURRENT LIMIT AT 25 ° C

Active low TPS2045AD

Active high TPS2055AD

Active low TPS2046AD

Active high TPS2056AD

Active low TPS2047AD

Active high TPS2057AD

Active low TPS2048AD

Active high TPS2058AD

MAXIMUM CONTINUOUS NUMBER OF

LOAD CURRENT SWITCHES

(A)

TYPICAL SHORT-CIRCUIT

(1)

(A)

Single

Dual

Triple

Quad

SOIC (D)

(2)

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

OUT

‡

GND

Current

Limit

Driver

UVLO

Charge

Pump

Thermal

Sense

Power Switch

†

‡

Active high for TPS205xA series

†

Current sense

Thermal

Sense

Driver

Current

Limit

Charge

Pump

UVLO

†

Driver

Current

Limit

†

Thermal

Sense

Charge

Pump

Power Switch

GND

EN1

‡

EN2

‡

OC1

OUT1

OUT2

OC2

‡

Active high for TPS205xA series

†

Current sense

TPS2045A , , TPS2046A

TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

FUNCTIONAL BLOCK DIAGRAMS

TPS2045A

TPS2046A

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

Thermal

Sense

Driver

Current

Limit

Charge

Pump

UVLO

†

Driver

Current

Limit

†

Thermal

Sense

Charge

Pump

Power Switch

GNDA

EN1

‡

IN1

EN2

‡

OC1

OUT1

OUT2

OC2

OUT3

OC3

IN2

EN3

‡

GNDB

Current

Limit

Driver

UVLO

Charge

Pump

Thermal

Sense

Power Switch

†

‡

Active high for TPS205xA series

†

Current sense

TPS2045A , , TPS2046A TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

TPS2047A

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

Thermal

Sense

Driver

Current

Limit

Charge

Pump

UVLO

†

Driver

Current

Limit

†

Thermal

Sense

Charge

Pump

Power Switch

GNDA

EN1

‡

IN1

EN2

‡

OC1

OUT 1

OUT 2

OC2

Thermal

Sense

Driver

Current

Limit

Charge

Pump

UVLO

†

Driver

Current

Limit

†

Thermal

Sense

Charge

Pump

Power Switch

GNDB

EN3

‡

IN2

EN4

‡

OC3

OUT3

OUT4

OC4

TPS2048A

‡

Active high for TPS205xA series

†

Current sense

TPS2045A , , TPS2046A

TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

TPS2045A , , TPS2046A TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

Terminal Functions

TPS2045A AND TPS2055A

TERMINAL

NAME

EN 4 - I Enable input. Logic low turns on power switch. EN - 4 I Enable input. Logic high turns on power switch. GND 1 1 I Ground IN 2, 3 2, 3 I Input voltage OC 5 5 O Overcurrent. Open drain output active low OUT 6, 7, 8 6, 7, 8 O Power-switch output

TPS2046A AND TPS2056A

NAME

EN1 3 - I Enable input. Logic low turns on power switch, IN-OUT1. EN2 4 - I Enable input. Logic low turns on power switch, IN-OUT2. EN1 - 3 I Enable input. Logic high turns on power switch, IN-OUT1. EN2 - 4 I Enable input. Logic high turns on power switch, IN-OUT2. GND 1 1 I Ground IN 2 2 I Input voltage OC1 8 8 O Overcurrent. Open drain output active low, for power switch, IN-OUT1 OC2 5 5 O Overcurrent. Open drain output active low, for power switch, IN-OUT2 OUT1 7 7 O Power-switch output OUT2 6 6 O Power-switch output

TPS2045A TPS2055A

TERMINAL

TPS2046A TPS2056A

NO. I/O DESCRIPTION

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

Terminal Functions (continued)

TPS2047A AND TPS2057A

TERMINAL

NAME

EN1 3 - I Enable input, logic low turns on power switch, IN1-OUT1. EN2 4 - I Enable input, logic low turns on power switch, IN1-OUT2. EN3 7 - I Enable input, logic low turns on power switch, IN2-OUT3. EN1 - 3 I Enable input, logic high turns on power switch, IN1-OUT1. EN2 - 4 I Enable input, logic high turns on power switch, IN1-OUT2. EN3 - 7 I Enable input, logic high turns on power switch, IN2-OUT3. GNDA 1 1 Ground for IN1 switch and circuitry. GNDB 5 5 Ground for IN2 switch and circuitry. IN1 2 2 I Input voltage IN2 6 6 I Input voltage NC 8, 9, 10 8, 9, 10 No connection OC1 16 16 O Overcurrent, open drain output active low, IN1-OUT1 OC2 13 13 O Overcurrent, open drain output active low, IN1-OUT2 OC3 12 12 O Overcurrent, open drain output active low, IN2-OUT3 OUT1 15 15 O Power-switch output, IN1-OUT1 OUT2 14 14 O Power-switch output, IN1-OUT2 OUT3 11 11 O Power-switch output, IN2-OUT3

TPS2048A AND TPS2058A

NAME

EN1 3 - I Enable input. logic low turns on power switch, IN1-OUT1. EN2 4 - I Enable input. Logic low turns on power switch, IN1-OUT2. EN3 7 - I Enable input. Logic low turns on power switch, IN2-OUT3. EN4 8 - I Enable input. Logic low turns on power switch, IN2-OUT4. EN1 - 3 I Enable input. Logic high turns on power switch, IN1-OUT1. EN2 - 4 I Enable input. Logic high turns on power switch, IN1-OUT2. EN3 - 7 I Enable input. Logic high turns on power switch, IN2-OUT3. EN4 - 8 I Enable input. Logic high turns on power switch, IN2-OUT4. GNDA 1 1 Ground for IN1 switch and circuitry. GNDB 5 5 Ground for IN2 switch and circuitry. IN1 2 2 I Input voltage IN2 6 6 I Input voltage OC1 16 16 O Overcurrent. Open drain output active low, IN1-OUT1 OC2 13 13 O Overcurrent. Open drain output active low, IN1-OUT2 OC3 12 12 O Overcurrent. Open drain output active low, IN2-OUT3 OC4 9 9 O Overcurrent. Open drain output active low, IN2-OUT4 OUT1 15 15 O Power-switch output, IN1-OUT1 OUT2 14 14 O Power-switch output, IN1-OUT2 OUT3 11 11 O Power-switch output, IN2-OUT3 OUT4 10 10 O Power-switch output, IN2-OUT4

TPS2047A TPS2057A

TERMINAL

TPS2048A TPS2058A

NO. I/O DESCRIPTION

TPS2045A , , TPS2046A

TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

TPS2045A , , TPS2046A TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

DETAILED DESCRIPTION

POWER SWITCH

The power switch is an N-channel MOSFET with a maximum on-state resistance of 135 m Ω (V Configured as a high-side switch, the power switch prevents current flow from OUT to IN and IN to OUT when disabled. The power switch supplies a minimum of 250 mA per switch.

CHARGE PUMP

An internal charge pump supplies power to the driver circuit and provides the necessary voltage to pull the gate of the MOSFET above the source. The charge pump operates from input voltages as low as 2.7 V and requires very little supply current.

DRIVER

The driver controls the gate voltage of the power switch. To limit large current surges and reduce the associated electromagnetic interference (EMI) produced, the driver incorporates circuitry that controls the rise times and fall times of the output voltage. The rise and fall times are typically in the 2-ms to 4-ms range.

ENABLE ( ENx, ENx)

The logic enable disables the power switch and the bias for the charge pump, driver, and other circuitry to reduce the supply current. The supply current is reduced to less than 10 µ A on the single and dual devices (20 µ A on the triple and quad devices) when a logic high is present on ENx (TPS204xA (TPS205xA turns the power on. The enable input is compatible with both TTL and CMOS logic levels.

). A logic zero input on ENx or a logic high on ENx restores bias to the drive and control circuits and

) or a logic low is present on ENx

= 5 V).

I(IN)

OVERCURRENT ( OCx)

The OCx open-drain output is asserted (active low) when an overcurrent or over temperature condition is encountered. The output will remain asserted until the overcurrent or over temperature condition is removed.

CURRENT SENSE

A sense FET monitors the current supplied to the load. The sense FET measures current more efficiently than conventional resistance methods. When an overload or short circuit is encountered, the current-sense circuitry sends a control signal to the driver. The driver in turn reduces the gate voltage and drives the power FET into its saturation region, which switches the output into a constant-current mode and holds the current constant while varying the voltage on the load.

THERMAL SENSE

The TPS204xA and TPS205xA implement a dual-threshold thermal trip to allow fully independent operation of the power distribution switches. In an overcurrent or short-circuit condition the junction temperature rises. When the die temperature rises to approximately 140 ° C, the internal thermal sense circuitry checks to determine which power switch is in an overcurrent condition and turns off that switch, thus isolating the fault without interrupting operation of the adjacent power switch. Hysteresis is built into the thermal sense, and after the device has cooled approximately 20 degrees, the switch turns back on. The switch continues to cycle off and on until the fault is removed. The ( OCx) open-drain output is asserted (active low) when over temperature or overcurrent occurs.

UNDERVOLTAGE LOCKOUT

A voltage sense circuit monitors the input voltage. When the input voltage is below approximately 2 V, a control signal turns off the power switch.

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

TPS2045A , , TPS2046A

TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

ABSOLUTE MAXIMUM RATINGS

over operating free-air temperature range (unless otherwise noted)

I(IN)

O(OUT)

or V

I( ENx)

O(OUT)

I(ENx)

Input voltage range Output voltage range Input voltage range – 0.3 V to 6 V Continuous output current internally limited Continuous total power dissipation See Dissipation Rating Table

stg

Operating virtual junction temperature range 0 ° C to 125 ° C Storage temperature range – 65 ° C to 150 ° C Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds 260 ° C

ESD Electrostatic discharge protection

(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2) All voltages are with respect to GND.

(2)

(1)

UNIT

0.3 V to 6 V

– 0.3 V to V

Human body model MIL-STD-883C 2 kV Machine model 0.2 kV

DISSIPATION RATING TABLE

PACKAGE

D-8 725 mW 5.9 mW/ ° C 464 mW 377 mW

D-16 1123 mW 9 mW/ ° C 719 mW 584 mW

TA≤ 25 ° C DERATING FACTOR TA= 70 ° C TA= 85 ° C

POWER RATING ABOVE TA= 25 ° C POWER RATING POWER RATING

+ 0.3 V

I(IN)

RECOMMENDED OPERATING CONDITIONS

I(IN)

or V

I( EN)

O(OUT)

Input voltage 2.7 5.5 V Input voltage 0 5.5 V

I(EN)

Continuous output current (per switch) 0 250 mA Operating virtual junction temperature 0 125 ° C

MIN MAX UNIT

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

TPS2045A , , TPS2046A TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING JUNCTION TEMPERATURE RANGE

= 5.5 V, IO= rated current, V

I(IN)

PARAMETER TEST CONDITIONS

Static drain-source on-state resistance, V 5-V operation IO= 0.25 A

DS(on)

Static drain-source on-state resistance, V

3.3-V operation IO= 0.25 A

Rise time, output ms

Fall time, output ms

(1) Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account

separately.

I( EN)

= V

(unless otherwise noted)

I(IN)

= 5 V, TJ= 25 ° C,

I(IN)

IO= 0.25 A

= 5 V, TJ= 85 ° C,

I(IN)

= 5 V, TJ= 125 ° C,

I(IN)

IO= 0.25 A V

= 3.3 V, TJ= 25 ° C,

I(IN)

IO= 0.25 A

= 3.3 V, TJ= 85 ° C,

I(IN)

= 3.3 V, TJ= 125 ° C,

I(IN)

IO= 0.25 A V

= 5.5 V, TJ= 25 ° C,

I(IN)

CL= 1 µ F, RL= 20 Ω V

= 2.7 V, TJ= 25 ° C,

I(IN)

CL= 1 µ F, RL= 20 Ω V

= 5.5 V, TJ= 25 ° C,

I(IN)

CL= 1 µ F, RL= 20 Ω V

= 2.7 V, TJ= 25 ° ° C,

I(IN)

CL= 1 µ F, RL= 20 Ω

(1)

TPS204xA TPS205xA

MIN TYP MAX MIN TYP MAX

80 100 80 100

90 120 90 120

100 135 100 135

90 125 90 125

110 145 110 145

120 160 120 160

2.5 2.5

3 3

4.4 4.4

2.5 2.5

UNIT

m Ω

ENABLE INPUT ENx OR ENx

PARAMETER TEST CONDITIONS UNIT

high-level input voltage 2.7 V ≤ V

Low-level input voltage V

Input current µ A

Turnon time CL= 100 µ F, RL= 20 Ω 20 20

Turnoff time CL= 100 µ F, RL= 20 Ω 40 40

off

TPS204xA V TPS205xA V

4.5 V ≤ V

2.7 V ≤ V

I( ENx) I(ENx)

≤ 5.5 V 2 2 V

I(IN)

≤ 5.5 V 0.8 0.8

I(IN)

≤ 4.5 V 0.4 0.4

I(IN)

= 0 V or V = V

I(IN)

= V

I( ENx)

or V

I(IN)

= 0 V – 0.5 0.5

I(ENx)

TPS204xA TPS205xA

MIN TYP MAX MIN TYP MAX

– 0.5 0.5

CURRENT LIMIT

PARAMETER TEST CONDITIONS

= 5 V, OUT connected to GND,

Short-circuit output current 0.3 0.5 0.7 0.3 0.5 0.7 A

I(IN)

Device enabled into short circuit

(1)

(1) Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account

separately.

TPS204xA TPS205xA

MIN TYP MAX MIN TYP MAX

UNIT

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

TPS2045A , , TPS2046A

TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

SUPPLY CURRENT (TPS2045A, TPS2055A)

PARAMETER TEST CONDITIONS UNIT

= V

I( EN)

Supply current, No Load

I(IN)

low-level output on OUT

= 0 V

I(EN)

= 0 V

Supply current, No Load

I( EN)

high-level output on OUT

= V

I(EN)

I(IN)

Leakage current connected µ A

OUT V to ground

Reverse leakage IN = High current impedance

= V

I( EN)

I(IN)

= 0 V 40 ° C ≤ TJ≤ 125 ° C 100

I(EN)

= 0 V 0.3

I( EN)

= V

I(EN)

I(IN)

TJ= 25 ° C 0.025 1 40 ° C ≤ TJ≤ 125 ° C 10 TJ= 25 ° C 0.025 1 40 ° C ≤ TJ≤ 125 ° C 10 TJ= 25 ° C 85 110 40 ° C ≤ TJ≤ 125 ° C 100 TJ= 25 ° C 85 110 40 ° C ≤ TJ≤ 125 ° C 100 40 ° C ≤ TJ≤ 125 ° C 100

TJ= 25 ° C µ A

SUPPLY CURRENT (TPS2046A, TPS2056A)

PARAMETER TEST CONDITIONS UNIT

Supply current, No Load

I( ENx)

I(IN)

= V

low-level output on OUT

= 0 V

I(ENx)

= 0 V

Supply current, No Load

I( ENx)

high-level output on OUT

= V

I(ENx)

Leakage current connected µ A

OUT V to ground

Reverse leakage IN = high current impedance

I( ENx)

I(ENx)

I( EN)

I(EN)

I(IN)

= V

I(IN)

= 0 V 40 ° C ≤ TJ≤ 125 ° C 100

= 0 V 0.3 = V

I(IN)

TJ= 25 ° C µ A

TPS2045A TPS2055A

MIN TYP MAX MIN TYP MAX

0.3

TPS2046A TPS2056A

MIN TYP MAX MIN TYP MAX

0.3

µ A

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

TPS2045A , , TPS2046A TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

SUPPLY CURRENT (TPS2047A, TPS2057A)

PARAMETER TEST CONDITIONS UNIT

Supply current, No load on

I( ENx)

I(INx)

= V

low-level output OUTx

= 0 V

I(ENx)

= 0 V

Supply current, No load on

I(E Nx)

high-level output OUTx

= V

I(ENx)

Leakage current connected µ A

OUTx V to ground

Reverse leakage IN = high current impedance

I( ENx)

I(ENx)

I( ENx)

I(ENx)

I(INx)

= V

I(INx)

= 0 V 40 ° C ≤ TJ≤ 125 ° C 200 = 0 V 0.3

= V

I(IN)

TJ= 25 ° C 0.05 2 40 ° C ≤ TJ≤ 125 ° C 20 TJ= 25 ° C 0.05 2 40 ° C ≤ TJ≤ 125 ° C 20 TJ= 25 ° C 160 200 40 ° C ≤ TJ≤ 125 ° C 200 TJ= 25 ° C 160 200 40 ° C ≤ TJ≤ 125 ° C 200 40 ° C ≤ TJ≤ 125 ° C 200

TJ= 25 ° C µ A

SUPPLY CURRENT (TPS2048A, TPS2058A)

PARAMETER TEST CONDITIONS UNIT

Supply current, No Load on

I( ENx)

I(INx)

= V

low-level output OUTx

= 0 V

I(ENx)

= 0 V

Supply current, No Load on

I( ENx)

high-level output OUTx

= V

I(ENx)

Leakage current connected µ A

OUTx V to ground

Reverse leakage IN = high current impedance

V V

I( ENx)

I(ENx)

I( EN) I(EN)

I(INx)

= V

I(INx)

= 0 V 40 ° C ≤ TJ≤ 125 ° C 200

= 0 V 0.3 = V

I(IN)

TJ= 25 ° C 0.05 2 40 ° C ≤ TJ≤ 125 ° C 20 TJ= 25 ° C 0.05 2 40 ° C ≤ TJ≤ 125 ° C 20 TJ= 25 ° C 170 220 40 ° C ≤ TJ≤ 125 ° C 200 TJ= 25 ° C 170 220 40 ° C ≤ TJ≤ 125 ° C 200 40 ° C ≤ TJ≤ 125 ° C 200

TJ= 25 ° C µ A

TPS2047A TPS2057A

MIN TYP MAX MIN TYP MAX

0.3

TPS2048A TPS2058A

MIN TYP MAX MIN TYP MAX

0.3

µ A

UNDERVOLTAGE LOCKOUT

PARAMETER TEST CONDITIONS UNIT

Low-level input voltage 2 2.5 2 2.5 V Hysteresis TJ= 25 ° C 100 100 mV

TPS204xA TPS205xA

MIN TYP MAX MIN TYP MAX

OVERCURRENT OC

PARAMETER TEST CONDITIONS UNIT

Sink current Output low voltage IO= 5 V, V Off-state current

(1)

VO= 5 V 10 10 mA

OL( OC)

VO= 5 V, VO= 3.3 V 1 1 µ A

(1) Specified by design, not production tested.

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

TPS204xA TPS205xA

MIN TYP MAX MIN TYP MAX

0.5 0.5 V

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PARAMETER MEASUREMENT INFORMATION

RL CL

OUT

90%

10%

50%

90%

10%

O(OUT)

I(EN)

O(OUT)

VOLTAGE WAVEFORMS

TEST CIRCUIT

off

50%

90%

10%

I(EN)

O(OUT)

off

0 4 8 12

t − Time − ms

16 20

I(IN)

= 5 V TA = 25°C CL = 0.1 µF RL = 20 Ω

I(EN)

(5 V/div)

O(OUT)

(2 V/div)

2 6 10 14 18

O(OUT)

(2 V/div)

0 1 2 3 4 5 6

t − Time − ms

7 8 9 10

I(IN)

= 5 V TA = 25°C CL = 0.1 µF RL = 20 Ω

I(EN)

(5 V/div)

Figure 1. Test Circuit and Voltage Waveforms

TPS2045A , , TPS2046A

TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

Figure 2. Turnon Delay and Rise Time Figure 3. Turnoff Delay and Rise Time

With 0.1- µ F Load With 0.1- µ F Load

www.ti.com

0 2 4 6 8 10 12

t − Time − ms

14 16 18 20

I(IN)

= 5 V TA = 25°C CL = 1 µF RL = 20 Ω

I(EN)

(5 V/div)

O(OUT)

(2 V/div)

0 1 2 3 4 5 6

t − Time − ms

7 8 9 10

I(EN)

(5 V/div)

O(OUT)

(2 V/div)

I(IN)

= 5 V TA = 25°C CL = 1 µF RL = 20 Ω

0 1 2 3 4 5 6

t − Time − ms

7 8 9 10

O(OUTx)

(0.2 A/div)

I(ENx)

(5 V/div)

I(IN)

= 5 V

TA = 25°C

0 10 20 30 40 50 60

t − Time − ms

70 80 90 100

O(OUT)

(0.2 A/div)

I(IN)

= 5 V TA = 25°C RAMP: 1A/10ms

O(OUT)

(2 V/div)

TPS2045A , , TPS2046A TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

PARAMETER MEASUREMENT INFORMATION (continued)

Figure 4. Turnon Delay and Rise Time Figure 5. Turnoff Delay and Fall Time

With 1- µ F Load With 1- µ F Load

Figure 6. TPS2055A, Short-Circuit Current, Figure 7. TPS2055A, Threshold Trip Current

Device Enabled Into Short With Ramped Load on Enabled Device

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

O(OC)

(5 V/div)

O(OUT)

(0.2 A/div)

I(IN)

= 5 V TA = 25°C RAMP: 1A/100 ms

0 20 40 60 80 100 120

t − Time − ms

140 160 180 200

0 2 4 6 8 10 12

t − Time − ms

14 16 18 20

I(EN)

(5 V/div)

O(OUT)

(0.2 A/div)

47 µF

220 µF

I(IN)

= 5 V TA = 25°C RL = 20 Ω

100 µF

O(OUT)

(0.5 A/div)

I(IN)

= 5 V

TA = 25°C

0 200 400 600 800 1000

O(OC)

(5 V/div)

t − Time − µs

O(OUT)

(1 A/div)

I(IN)

= 5 V

TA = 25°C

0 200 400 600 800 1000

O(OC)

(5 V/div)

t − Time − µs

PARAMETER MEASUREMENT INFORMATION (continued)

TPS2045A , , TPS2046A

TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

Figure 8. OC Response With Ramped Load Figure 9. Inrush Current With 47- µ F, 100- µ F

on Enabled Device and 220- µ F Load Capacitance

Figure 10. 4- Ω Load Connected to Figure 11. 1- Ω Load Connected to

Enabled Device Enabled Device

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

2.5 3 3.5 4 4.5 5 5.5 6

Turnon Delay Time − ms

VI − Input Voltage − V

CL = 1 µF RL = 20 Ω TA = 25°C

3.3

2.7

2.4

2.5 3 3.5 4 4.5

Turnon Delay Time − ms

3.6

3.9

5 5.5 6

VI − Input Voltage − V

CL = 1 µF RL = 20 Ω TA = 25°C

1.3

1.4

1.5

1.6

1.8

1.9

2.5 3 3.5 4 4.5 5 5.5 6

− Fall Time − ms f

− Input Voltage − V

1.7

CL = 1 µF RL = 20 Ω TA = 25°C

2.1

2.3

2.5

2.7

2.5 3 3.5 4 4.5 5 5.5 6

− Rise Time − msr

− Input Voltage − V

2.2

2.4

2.6

CL = 1 µF RL = 20 Ω TA = 25°C

TPS2045A , , TPS2046A TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

TYPICAL CHARACTERISTICS

TURNON DELAY TIME TURNOFF DELAY TIME

vs vs

INPUT VOLTAGE INPUT VOLTAGE

Figure 12. Figure 13.

RISE TIME FALL TIME

vs vs

INPUT VOLTAGE INPUT VOLTAGE

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

Figure 14. Figure 15.

www.ti.com

100

−40 0 25 85 125

I(IN)

= 5.5 V

I(IN)

= 5 V

I(IN)

= 4.5 V

I(IN)

= 3.3 V

I(IN)

= 2.7 V

− Supply Current, Output Enabled −

I(IN)

Aµ

TJ − Junction Temperature − °C

I(IN)

= 4.5 V

100

120

140

160

−40 0 25 85 125

I(IN)

= 5.5 V

I(IN)

= 5 V

I(IN)

= 3.3 V

I(IN)

= 2.7 V

− Supply Current, Output Disabled − nA

I(IN)

TJ − Junction Temperature − °C

100

120

140

160

0 25 85 125

I(IN)

= 3 V

I(IN)

= 4.5 V

I(IN)

= 5 V

I(IN)

= 2.7 V

I(IN)

= 3.3 V

− Static Drain-Source On-State Resistance − m

Ω

DS(on)

TJ − Junction Temperature − °C

100 200 300 400 500

TA = 25°C

I(IN)

= 2.7 V

I(IN)

= 3.3 V

I(IN)

= 4.5 V

I(IN)

= 5 V

− Input-to-Output Voltage − mVV

I(IN)

−

O(OUT)

IL − Load Current − A

TYPICAL CHARACTERISTICS (continued)

TPS2045A , , TPS2046A

TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

SUPPLY CURRENT, OUTPUT ENABLED SUPPLY CURRENT, OUTPUT DISABLED

vs vs

JUNCTION TEMPERATURE JUNCTION TEMPERATURE

Figure 16. Figure 17.

STATIC DRAIN-SOURCE ON-STATE RESISTANCE INPUT-TO-OUTPUT VOLTAGE

vs vs

JUNCTION TEMPERATURE LOAD CURRENT

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

Figure 18. Figure 19.

www.ti.com

Threshold Trip Current − A

VI − Input Voltage − V

0.57

0.59

0.61

0.63

0.65

0.67

2.5 3 3.5 4 4.5 5 5.5 6

TA = 25°C Load Ramp = 1 A/10 ms

400

410

420

430

440

450

460

470

480

490

500

−40 0 25 85 125 TJ − Junction Temperature − °C

− Short-Circuit Output Current − mA I

I(IN)

= 3.3 V

I(IN)

= 2.7 V

I(IN)

= 5 .5V

I(IN)

= 4 .5V

I(IN)

= 5V

100

150

200

250

300

0 2 4 6 8 10

Current-Limit Response −

Peak Current − A

sµ

2.16

2.18

2.2

2.22

2.24

2.26

2.28

2.3

2.32

2.34

2.36

−40 0 25 85 125

UVLO − Undervoltage Lockout − V

TJ − Junction Temperature − °C

Start Threshold

Stop Threshold

TPS2045A , , TPS2046A TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

TYPICAL CHARACTERISTICS (continued)

SHORT-CIRCUIT OUTPUT CURRENT THRESHOLD TRIP CURRENT

JUNCTION TEMPERATURE INPUT VOLTAGE

UNDERVOLTAGE LOCKOUT CURRENT-LIMIT RESPONSE

JUNCTION TEMPERATURE PEAK CURRENT

vs vs

Figure 20. Figure 21.

vs vs

Figure 22. Figure 23.

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

OC EN

GND

0.1 µF

2,3

5 4

6,7,8

0.1 µF 22 µF

Load

OUT

TPS2045A

Power Supply

2.7 V to 5.5 V

TPS2045A , , TPS2046A

TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

APPLICATION INFORMATION

Figure 24. Typical Application (Example, TPS2045A)

POWER-SUPPLY CONSIDERATIONS

A 0.01- µ F to 0.1- µ F ceramic bypass capacitor between INx and GND, close to the device, is recommended. Placing a high-value electrolytic capacitor on the output pin(s) is recommended when the output load is heavy. This precaution reduces power-supply transients that may cause ringing on the input. Additionally, bypassing the output with a 0.01- µ F to 0.1- µ F ceramic capacitor improves the immunity of the device to short-circuit transients.

OVERCURRENT

A sense FET is employed to check for overcurrent conditions. Unlike current-sense resistors, sense FETs do not increase the series resistance of the current path. When an overcurrent condition is detected, the device maintains a constant output current and reduces the output voltage accordingly. Complete shutdown occurs only if the fault is present long enough to activate thermal limiting.

Three possible overload conditions can occur. In the first condition, the output has been shorted before the device is enabled or before V

has been applied (see Figure 6). The TPS204xA and TPS205xA sense the

I(IN)

short and immediately switch into a constant-current output. In the second condition, a short or an overload occurs while the device is enabled. At the instant the overload

occurs, very high currents may flow for a short time before the current-limit circuit can react. After the current-limit circuit has tripped (reached the overcurrent trip threshold) the device switches into constant-current mode.

In the third condition, the load has been gradually increased beyond the recommended operating current. The current is permitted to rise until the current-limit threshold is reached or until the thermal limit of the device is exceeded (see Figure 7). The TPS204xA and TPS205xA are capable of delivering current up to the current-limit threshold without damaging the device. Once the threshold has been reached, the device switches into its constant-current mode.

OC RESPONSE

The OC open-drain output is asserted (active low) when an overcurrent or over temperature condition is encountered. The output will remain asserted until the overcurrent or over temperature condition is removed. Connecting a heavy capacitive load to an enabled device can cause momentary false overcurrent reporting from the inrush current flowing through the device, charging the downstream capacitor. The TPS204xA and TPS205xA family of devices are designed to reduce false overcurrent reporting. An internal overcurrent transient filter eliminates the need for external components to remove unwanted pulses. Using low-ESR electrolytic capacitors on the output lowers the inrush current flow through the device during hot-plug events by providing a low-impedance energy source, also reducing erroneous overcurrent reporting.

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

GND IN IN

OUT

OUT OUT

TPS2045A

pullup

V+

PD+ r

DS(on)

TJ+ PD R

qJA

) T

TPS2045A , , TPS2046A TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

Figure 25. Typical Circuit for OC Pin (Example, TPS2045A)

POWER DISSIPATION AND JUNCTION TEMPERATURE

The low on-resistance on the n-channel MOSFET allows small surface-mount packages, such as SOIC, to pass large currents. The thermal resistance of these packages is high compared to those of power packages; it is good design practice to check power dissipation and junction temperature. Begin by determining the r N-channel MOSFET relative to the input voltage and operating temperature. As an initial estimate, use the highest operating ambient temperature of interest and read r

from Figure 18. Using this value, the power

DS(on)

dissipation per switch can be calculated by:

of the

DS(on)

Depending on which device is being used, multiply this number by the number of switches being used. This step will render the total power dissipation from the N-channel MOSFETs.

Finally, calculate the junction temperature:

Where: T pin) P

= Ambient temperature ° C R

= Total power dissipation based on number of switches being used.

= Thermal resistance SOIC = 172 ° C/W (for 8 pin), 111 ° C/W (for 16

Θ JA

Compare the calculated junction temperature with the initial estimate. If they do not agree within a few degrees, repeat the calculation, using the calculated value as the new estimate. Two or three iterations are generally sufficient to get a reasonable answer.

THERMAL PROTECTION

Thermal protection prevents damage to the IC when heavy-overload or short-circuit faults are present for extended periods of time. The faults force the TPS204xA and TPS205xA into constant-current mode, which causes the voltage across the high-side switch to increase; under short-circuit conditions, the voltage across the switch is equal to the input voltage. The increased dissipation causes the junction temperature to rise to high levels. The protection circuit senses the junction temperature of the switch and shuts it off. Hysteresis is built into the thermal sense circuit, and after the device has cooled approximately 20 degrees, the switch turns back on. The switch continues to cycle in this manner until the load fault or input power is removed.

The TPS204xA and TPS205xA implement a dual thermal trip to allow fully independent operation of the power distribution switches. In an overcurrent or short-circuit condition the junction temperature will rise. Once the die temperature rises to approximately 140 ° C, the internal thermal sense circuitry checks which power switch is in an overcurrent condition and turns that power switch off, thus isolating the fault without interrupting operation of the adjacent power switch. Should the die temperature exceed the first thermal trip point of 140 ° C and reach 160 ° C, both switches turn off. The OC open-drain output is asserted (active low) when overtemperature or overcurrent occurs.

UNDERVOLTAGE LOCKOUT (UVLO)

An undervoltage lockout ensures that the power switch is in the off state at power up. Whenever the input voltage falls below approximately 2 V, the power switch will be quickly turned off. This facilitates the design of hot-insertion systems where it is not possible to turn off the power switch before input power is removed. The UVLO will also keep the switch from being turned on until the power supply has reached at least 2 V, even if the switch is enabled. Upon reinsertion, the power switch will be turned on, with a controlled rise time to reduce EMI and voltage overshoots.

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

OC EN

GND

0.1 µF

2,3

5 4

6, 7, 8

0.1 µF 10 µF

GND

OUT

TPS2045A

Power Supply

D+ D–

BUS

USB

Control

3.3 V

10 µF

Internal Function

TPS2045A , , TPS2046A

TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

UNIVERSAL SERIAL BUS (USB) APPLICATIONS

The universal serial bus (USB) interface is a 12-Mb/s, or 1.5-Mb/s, multiplexed serial bus designed for low-to-medium bandwidth PC peripherals (e.g., keyboards, printers, scanners, and mice). The four-wire USB interface is conceived for dynamic attach-detach (hot plug-unplug) of peripherals. Two lines are provided for differential data, and two lines are provided for 5-V power distribution.

USB data is a 3.3-V level signal, but power is distributed at 5 V to allow for voltage drops in cases where power is distributed through more than one hub across long cables. Each function must provide its own regulated 3.3 V from the 5-V input or its own internal power supply.

The USB specification defines the following five classes of devices, each differentiated by power-consumption requirements:

• Hosts/self-powered hubs (SPH)

• Bus-powered hubs (BPH)

• Low-power, bus-powered functions

• High-power, bus-powered functions

• Self-powered functions

Self-powered and bus-powered hubs distribute data and power to downstream functions. The TPS204xA and TPS205xA can provide power-distribution solutions for many of these classes of devices.

HOST/SELF-POWERED AND BUS-POWERED HUBS

Hosts and self-powered hubs have a local power supply that powers the embedded functions and the downstream ports. This power supply must provide from 5.25 V to 4.75 V to the board side of the downstream connection under full-load and no-load conditions. Hosts and SPHs are required to have current-limit protection and must report overcurrent conditions to the USB controller. Typical SPHs are desktop PCs, monitors, printers, and stand-alone hubs.

Bus-powered hubs obtain all power from upstream ports and often contain an embedded function. The hubs are required to power up with less than one unit load. The BPH usually has one embedded function, and power is always available to the controller of the hub. If the embedded function and hub require more than 100 mA on power up, the power to the embedded function may need to be kept off until enumeration is completed. This can be accomplished by removing power or by shutting off the clock to the embedded function. Power switching the embedded function is not necessary if the aggregate power draw for the function and controller is less than one unit load. The total current drawn by the bus-powered device is the sum of the current to the controller, the embedded function, and the downstream ports, and it is limited to 500 mA from an upstream port.

LOW-POWER BUS-POWERED FUNCTIONS AND HIGH-POWER BUS-POWERED FUNCTIONS

Both low-power and high-power bus-powered functions obtain all power from upstream ports; low-power functions always draw less than 100 mA (see Figure 26); high-power functions must draw less than 100 mA at power up and can draw up to 500 mA after enumeration. If the load of the function is more than the parallel combination of 44 Ω and 10 µ F at power up, the device must implement inrush current limiting.

Figure 26. Low-Power Bus-Powered Function (Example, TPS2045A)

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

TPS2045A , , TPS2046A TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

USB POWER-DISTRIBUTION REQUIREMENTS

USB can be implemented in several ways, and, regardless of the type of USB device being developed, several power-distribution features must be implemented.

• Hosts/self-powered hubs must: – Current-limit downstream ports – Report overcurrent conditions on USB V – Enable/disable power to downstream ports – Power up at <100 mA – Limit inrush current (<44 Ω and 10 µ F) – Limit inrush currents – Power up at <100 mA

• Bus-powered hubs must: – Enable/disable power to downstream ports – Power up at <100 mA – Limit inrush current (<44 Ω and 10 µ F) – Limit inrush currents – Power up at <100 mA

• Functions must: – Limit inrush currents – Power up at <100 mA

The feature set of the TPS204xA and TPS205xA allows them to meet each of these requirements. The integrated current-limiting and overcurrent reporting is required by hosts and self-powered hubs. The logic-level enable and controlled rise times meet the need of both input and output ports on bus-power hubs, as well as the input ports for bus-power functions.

BUS

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

†

USB rev 1.1 requires 120 µF per hub.

DP1

DM1

DP2

DM2

DP3

DM3

DP4

PWRON1

OVRCUR1

PWRON2

OVRCUR2

PWRON3

OVRCUR3

PWRON4

OVRCUR4

DM4

DP0 DM0

XTAL1

XTAL2

OCSOFF

SN75240

D + D −

5 V

GND

D + D −

5 V

D + D −

5 V

D + D −

5 V

48-MHz Crystal

Downstream

Ports

TUSB2040

Hub Controller

Tuning Circuit

ABC

33 µF

†

SN75240

ABC

GND

33 µF

†

33 µF

†

33 µF

†

D + D −

Upstream Port

SN75240

A B

5 V

GND

C D

GND

Ferrite Beads

BUSPWR

GANGE

GND

3.3 V

4.7 µF

0.1 µF

4.7 µF

GND

EN OC

TPS2045A

OUT

EN OC

TPS2045A

OUT

EN OC

TPS2045A

OUT

EN OC

TPS2045A

OUT

TPS76333

0.1 µF

TPS2045A , , TPS2046A

TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

Figure 27. Bus-Powered Hub Implementation, TPS2045A

www.ti.com

DP1

DM1

DP2

DM2

DP3

DM3

DP4

PWRON1

OVRCUR1

PWRON2

OVRCUR2

PWRON3

OVRCUR3

PWRON4

OVRCUR4

DM4

DP0 DM0

XTAL1

XTAL2

OCSOFF

SN75240

EN1

OC1

OUT1

D + D −

5 V

GND

D + D −

5 V

D + D −

5 V

D + D −

5 V

48-MHz Crystal

Downstream

Ports

TUSB2040

Hub Controller

TPS2046A

Tuning Circuit

ABC

33 µF

†

SN75240

ABC

GND

33 µF

†

33 µF

†

33 µF

†

D +

D −

Upstream Port

SN75240

5 V

GND

C D

GND

Ferrite Beads

BUSPWR

GANGE

GND

3.3 V

4.7 µF

0.1 µF

4.7 µF

EN2 OC2

OUT2

EN1

OC1

OUT1

TPS2046A

EN2 OC2

OUT2

0.1 µF

GND

†

USB rev 1.1 requires 120 µF per hub.

TPS76333

TPS2045A , , TPS2046A TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

Figure 28. Bus-Powered Hub Implementation, TPS2046A

www.ti.com

DP1

DM1

DP2

DM2

DP3

DM3

DP4

PWRON1

OVRCUR1

PWRON2

OVRCUR2

PWRON3

OVRCUR3

DM4

DP0 DM0

XTAL1

XTAL2

OCSOFF

SN75240

D + D −

5 V

GND

D + D −

5 V

D + D −

5 V

48-MHz Crystal

Downstream

Ports

TUSB2040

Hub Controller

Tuning Circuit

ABC

47 µF

†

1/2 SN75240

ABC

GND

47 µF

†

47 µF

†

D +

D −

Upstream Port

1/2 SN75240

5 V

GND

C D

GND

Ferrite Beads

BUSPWR

GANGE

GND

3.3 V

4.7 µF

0.1 µF

4.7 µF

EN1

IN1

OC1

OUT1

TPS2047A

EN2 OC2

OUT2

0.1 µF

GND

†

USB rev 1.1 requires 120 µF per hub.

EN3 OC3

OUT3

IN2

GNDA GNDB

TPS76333

TPS2045A , , TPS2046A

TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

Figure 29. Bus-Powered Hub Implementation, TPS2047A

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

DP1

DM1

DP2

DM2

DP3

DM3

DP4

PWRON1

OVRCUR1

PWRON2

OVRCUR2

PWRON3

OVRCUR3

PWRON4

OVRCUR4

DM4

DP0 DM0

XTAL1

XTAL2

OCSOFF

SN75240

D + D −

5 V

GND

D + D −

5 V

D + D −

5 V

D + D −

5 V

48-MHz Crystal

Downstream

Ports

TUSB2040

Hub Controller

Tuning Circuit

ABC

33 µF

†

SN75240

ABC

GND

33 µF

†

33 µF

†

33 µF

†

D +

D −

Upstream Port

TPS2041A

SN75240

5 V

GND

C D

GND

Ferrite Beads

BUSPWR

GANGE

GND

3.3 V

4.7 µF

0.1 µF

4.7 µF

EN1

IN1

OC1

OUT1

TPS2048A

EN2 OC2

OUT2

0.1 µF

GND

†

USB rev 1.1 requires 120 µF per hub.

EN3 OC3

OUT3

EN4 OC4

OUT4

IN2

GNDA GNDB

TPS76333

TPS2045A , , TPS2046A TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

Figure 30. Bus-Powered Hub Implementation, TPS2048A

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

www.ti.com

Power

Supply

Block of Circuitry

TPS2045A

GND IN IN

OUT OUT OUT

0.1 µF

1000 µF Optimum

2.7 V to 5.5 V

PC Board

Overcurrent Response

TPS2045A , , TPS2046A

TPS2047A , TPS2048A , TPS2055A TPS2056A , TPS2057A , TPS2058A

SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008

GENERIC HOT-PLUG APPLICATIONS (see Figure 31 )

In many applications it may be necessary to remove modules or pc boards while the main unit is still operating. These are considered hot-plug applications. Such implementations require the control of current surges seen by the main power supply and the card being inserted. The most effective way to control these surges is to limit and slowly ramp the current and voltage being applied to the card, similar to the way in which a power supply normally turns on. Due to the controlled rise times and fall times of the TPS204xA and TPS205xA, these devices can be used to provide a softer start-up to devices being hot-plugged into a powered system. The UVLO feature of the TPS204xA and TPS205xA also ensures the switch will be off after the card has been removed, and the switch will be off during the next insertion. The UVLO feature insures a soft start with a controlled rise time for every insertion of the card or module.

Figure 31. Typical Hot-Plug Implementation (Example, TPS2045A)

By placing the TPS204xA and TPS205xA between the V

input and the rest of the circuitry, the input power will

reach these devices first after insertion. The typical rise time of the switch is approximately 2.5 ms, providing a slow voltage ramp at the output of the device. This implementation controls system surge currents and provides a hot-plugging mechanism for any device.

Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A

PACKAGE OPTION ADDENDUM

www.ti.com

PACKAGING INFORMATION

Orderable Device Status

TPS2045AD ACTIVE SOIC D 8 75 Green (RoHS &

TPS2045ADG4 ACTIVE SOIC D 8 75 Green (RoHS &

TPS2045ADR ACTIVE SOIC D 8 2500 Green (RoHS &

TPS2045ADRG4 ACTIVE SOIC D 8 2500 Green (RoHS &

TPS2046AD NRND SOIC D 8 75 Green (RoHS &

TPS2046ADG4 ACTIVE SOIC D 8 75 Green (RoHS &

TPS2046ADR NRND SOIC D 8 2500 Green (RoHS &

TPS2046ADRG4 NRND SOIC D 8 2500 Green (RoHS &

TPS2047AD NRND SOIC D 16 40 Green (RoHS &

TPS2047ADG4 ACTIVE SOIC D 16 40 Green (RoHS &

TPS2047ADR NRND SOIC D 16 2500 Green (RoHS &

TPS2047ADRG4 NRND SOIC D 16 2500 Green (RoHS &

TPS2048AD ACTIVE SOIC D 16 40 Green (RoHS &

TPS2048ADG4 ACTIVE SOIC D 16 40 Green (RoHS &

TPS2048ADR ACTIVE SOIC D 16 2500 Green (RoHS &

TPS2048ADRG4 ACTIVE SOIC D 16 2500 Green (RoHS &

TPS2055AD ACTIVE SOIC D 8 75 Green (RoHS &

TPS2055ADG4 ACTIVE SOIC D 8 75 Green (RoHS &

TPS2055ADR ACTIVE SOIC D 8 2500 Green (RoHS &

TPS2055ADRG4 ACTIVE SOIC D 8 2500 Green (RoHS &

TPS2056AD NRND SOIC D 8 75 Green (RoHS &

TPS2056ADG4 ACTIVE SOIC D 8 75 Green (RoHS &

TPS2056ADR ACTIVE SOIC D 8 2500 Green (RoHS &

TPS2056ADRG4 ACTIVE SOIC D 8 2500 Green (RoHS &

TPS2057AD ACTIVE SOIC D 16 40 Green (RoHS &

(1)

Package

Type

Package Drawing

Pins Package

Qty

Eco Plan

no Sb/Br)

(2)

Lead/Ball Finish MSL Peak Temp

CU NIPDAU Level-1-260C-UNLIM

14-Jan-2008

(3)

Addendum-Page 1

PACKAGE OPTION ADDENDUM

www.ti.com

Orderable Device Status

(1)

Package

Type

Package Drawing

Pins Package

Qty

Eco Plan

TPS2057ADG4 ACTIVE SOIC D 16 40 Green (RoHS &

(2)

Lead/Ball Finish MSL Peak Temp

CU NIPDAU Level-1-260C-UNLIM

14-Jan-2008

(3)

no Sb/Br)

TPS2057ADR ACTIVE SOIC D 16 2500 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

TPS2057ADRG4 ACTIVE SOIC D 16 2500 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

TPS2058AD ACTIVE SOIC D 16 40 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

TPS2058ADG4 ACTIVE SOIC D 16 40 Green (RoHS &

CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

TPS2058ADRG4 ACTIVE SOIC D 16 TBD Call TI Call TI

(1)

The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in

a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device.

(2)

Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check

http://www.ti.com/productcontent for the latest availability information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements

for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder

temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

Addendum-Page 2

PACKAGE MATERIALS INFORMATION

www.ti.com

TAPE AND REEL INFORMATION

11-Mar-2008

*All dimensions are nominal

Device Package

Type

TPS2045ADR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 TPS2046ADR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 TPS2047ADR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 TPS2048ADR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 TPS2048ADR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 TPS2055ADR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 TPS2056ADR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 TPS2057ADR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1

Package Drawing

Pins SPQ Reel

Diameter

(mm)

Reel

Width

W1 (mm)

A0 (mm) B0 (mm) K0 (mm) P1

(mm)W(mm)

Pin1

Quadrant

Pack Materials-Page 1

PACKAGE MATERIALS INFORMATION

www.ti.com

11-Mar-2008

*All dimensions are nominal

Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)

TPS2045ADR SOIC D 8 2500 342.9 338.1 20.6 TPS2046ADR SOIC D 8 2500 342.9 338.1 20.6 TPS2047ADR SOIC D 16 2500 342.9 345.9 28.6 TPS2048ADR SOIC D 16 2500 346.0 346.0 33.0 TPS2048ADR SOIC D 16 2500 342.9 345.9 28.6 TPS2055ADR SOIC D 8 2500 342.9 338.1 20.6 TPS2056ADR SOIC D 8 2500 346.0 346.0 29.0 TPS2057ADR SOIC D 16 2500 346.0 346.0 33.0

Pack Materials-Page 2

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TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed.

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TEXAS INSTRUMENTS TPS2045A, TPS2046A, TPS2047A, TPS2048A, TPS2055A Technical data

Specifications and Main Features

Frequently Asked Questions

User Manual

FEATURES

DESCRIPTION

FUNCTIONAL BLOCK DIAGRAMS

TPS2045A

TPS2046A

TPS2047A

DETAILED DESCRIPTION

POWER SWITCH

CHARGE PUMP

DRIVER

ENABLE ( ENx, ENx)

OVERCURRENT ( OCx)

CURRENT SENSE

THERMAL SENSE

UNDERVOLTAGE LOCKOUT

ABSOLUTE MAXIMUM RATINGS

DISSIPATION RATING TABLE

RECOMMENDED OPERATING CONDITIONS

ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING JUNCTION TEMPERATURE RANGE

ENABLE INPUT ENx OR ENx

CURRENT LIMIT

SUPPLY CURRENT (TPS2045A, TPS2055A)

SUPPLY CURRENT (TPS2046A, TPS2056A)

SUPPLY CURRENT (TPS2047A, TPS2057A)

SUPPLY CURRENT (TPS2048A, TPS2058A)

UNDERVOLTAGE LOCKOUT

OVERCURRENT OC

PARAMETER MEASUREMENT INFORMATION

TYPICAL CHARACTERISTICS

APPLICATION INFORMATION

POWER-SUPPLY CONSIDERATIONS

OVERCURRENT

OC RESPONSE

POWER DISSIPATION AND JUNCTION TEMPERATURE

THERMAL PROTECTION

UNDERVOLTAGE LOCKOUT (UVLO)

UNIVERSAL SERIAL BUS (USB) APPLICATIONS

HOST/SELF-POWERED AND BUS-POWERED HUBS

LOW-POWER BUS-POWERED FUNCTIONS AND HIGH-POWER BUS-POWERED FUNCTIONS

USB POWER-DISTRIBUTION REQUIREMENTS