TEXAS INSTRUMENTS TPS2056A, TPS2057A, TPS2058A Technical data

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)

www.ti.com

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

+ 22 hidden pages

TEXAS INSTRUMENTS TPS2056A, TPS2057A, TPS2058A 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