TEXAS INSTRUMENTS TPS2041A, TPS2042A, TPS2043A, TPS2044A, TPS2051A Technical data

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TPS2041A, TPS2042A, TPS2043A, TPS2044A TPS2051A, TPS2052A, TPS2053A, TPS2054A

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 – SEPTEMBER 2000

80-mΩ High-Side MOSFET Switch

500 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 µA Maximum Standby Supply Current for Single and Dual (20 µA for Triple and Quad)

Bidirectional Switch

Ambient Temperature Range, 0°C to 85°C

ESD Protection

UL Listed – File No. E169910

description

The TPS2041A through TPS2044A and TPS2051A through TPS2054A power-distribution switches are intended for applications where

TPS2041A, TPS2051A

D PACKAGE

(TOP VIEW)

GND

GNDA

GNDB

† NC – No connect

2 3

†

TPS2043A, TPS2053A

D PACKAGE

(TOP VIEW)

IN1

†

EN1 EN2

EN3

All enable inputs are active high for the TPS205xA series.

IN2

†

4 5 6

†

7 8

OUT

7 6

OUT

OC1

OUT1

OUT2

OC2

OC3

OUT3

11 10

TPS2042A, TPS2052A

D PACKAGE

(TOP VIEW)

GND

EN1 EN2

GNDA

EN1 EN2

GNDB

EN3 EN4

†

TPS2044A, TPS2054A

D PACKAGE

(TOP VIEW)

IN1

†

4 5

IN2

†

heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 80-mΩ 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.

16 15 14 13 12

OC1

OUT1

OUT2

6 5

OC2

OC1 OUT1 OUT2 OC2 OC3 OUT3

OUT4

OC4

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 0.9 A.

GENERAL SWITCH CATALOG

33 mΩ, single

80 mΩ, single

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

TPS201xA

TPS202x

TPS203x

TPS2014 TPS2015 TPS2041 TPS2051 TPS2045 TPS2055

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.

0.2 A – 2 A

600 mA 1 A 500 mA 500 mA 250 mA 250 mA

80 mΩ, dual

260 mΩ

IN1 IN2

1.3 Ω

OUT

TPS2042 TPS2052 TPS2046 TPS2056

TPS2100/1

IN1 500 mA IN2 10 mA

TPS2102/3/4/5

IN1 500 mA IN2 100 mA

500 mA 500 mA 250 mA 250 mA

80 mΩ, dual

TPS2080 TPS2081 TPS2082 TPS2090 TPS2091 TPS2092

500 mA 500 mA 500 mA 250 mA 250 mA 250 mA

80 mΩ, triple

TPS2043 TPS2053 TPS2047 TPS2057

500 mA 500 mA 250 mA 250 mA

80 mΩ, quad

TPS2044 TPS2054 TPS2048 TPS2058

500 mA 500 mA 250 mA 250 mA

TPS2085 TPS2086 TPS2087 TPS2095 TPS2096 TPS2097

80 mΩ, quad

500 mA 500 mA 500 mA 250 mA 250 mA 250 mA

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS2041A, TPS2042A, TPS2043A, TPS2044A

MAXIMUM CONTINUOUS

NUMBER OF

Single

Dual

0°C to 85°C

0.5

0.9

Triple

Quad

TPS2051A, TPS2052A, TPS2053A, TPS2054A CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 – SEPTEMBER 2000

AVAILABLE OPTIONS

RECOMMENDED

†

The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2041ADR)

ENABLE

Active low Active high Active low Active high Active low Active high Active low Active high

LOAD CURRENT

(A)

TYPICAL SHORT-CIRCUIT

CURRENT LIMIT AT 25°C

(A)

SWITCHES

PACKAGED DEVICES

SOIC

†

(D)

TPS2041AD TPS2051AD TPS2042AD TPS2052AD TPS2043AD TPS2053AD TPS2044AD TPS2054AD

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

functional block diagrams

TPS2041A

Charge

Pump

TPS2041A, TPS2042A, TPS2043A, TPS2044A TPS2051A, TPS2052A, TPS2053A, TPS2054A

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 – SEPTEMBER 2000

Power Switch

†

OUT

TPS2042A

‡

UVLO

GND

†

Current sense

‡

Active high for TPS205xA series

GND

‡

EN1

Charge

Pump

UVLO

Thermal

Sense

Driver

Thermal

Sense

Current

Limit

Power Switch

Current

Limit

OC1

†

OUT1

Charge

Pump

‡

EN2

†

Current sense

‡

Active high for TPS205xA series

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Driver

Thermal

Sense

Current

Limit

†

OUT2

OC2

TPS2041A, TPS2042A, TPS2043A, TPS2044A TPS2051A, TPS2052A, TPS2053A, TPS2054A CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 – SEPTEMBER 2000

functional block diagrams

TPS2043A

OC1

GNDA

EN1

IN1

EN2

Thermal

Sense

‡

Driver

Charge

Pump

UVLO

Power Switch

Charge

Pump

Driver

‡

Thermal

Sense

Current

Limit

Current

Limit

†

OUT1

†

OUT2

OC2

IN2

Charge

Pump

‡

EN3

UVLO

GNDB

†

Current sense

‡

Active high for TPS205xA series

Power Switch

Driver

Thermal

Sense

Current

Limit

†

OUT3

OC3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

functional block diagrams

TPS2041A, TPS2042A, TPS2043A, TPS2044A TPS2051A, TPS2052A, TPS2053A, TPS2054A

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 – SEPTEMBER 2000

TPS2044A

GNDA

EN1

IN1

EN2

OC1

Thermal

Sense

‡

Driver

Charge

Pump

UVLO

Charge

Pump

Driver

‡

Thermal

Sense

Current

Limit

Power Switch

Current

Limit

†

OUT 1

†

OUT 2

OC2

GNDB

‡

EN3

Charge

Pump

IN2

Charge

Pump

‡

EN4

†

Current sense

‡

Active high for TPS205xA series

UVLO

Thermal

Sense

Driver

Thermal

Sense

Current

Limit

Power Switch

Current

Limit

OC3

†

OUT3

†

OUT4

OC4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS2041A, TPS2042A, TPS2043A, TPS2044A

NAME

TPS2051A, TPS2052A, TPS2053A, TPS2054A CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 – SEPTEMBER 2000

Terminal Functions

TPS2041A and TPS2051A

TERMINAL

NO.

TPS2041A TPS2051A

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. Logic output active low OUT 6, 7, 8 6, 7, 8 O Power-switch output

TPS2042A and TPS2052A

TERMINAL

NO.

TPS2042A TPS2052A

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. Logic output active low, for power switch, IN-OUT1 OC2 5 5 O Overcurrent. Logic output active low, for power switch, IN-OUT2 OUT1 7 7 O Power-switch output OUT2 6 6 O Power-switch output

I/O DESCRIPTION

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

NAME

TPS2041A, TPS2042A, TPS2043A, TPS2044A TPS2051A, TPS2052A, TPS2053A, TPS2054A

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

Terminal Functions (Continued)

TPS2043A and TPS2053A

TERMINAL

NO.

TPS2043A TPS2053A

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, logic output active low, IN1-OUT1 OC2 13 13 O Overcurrent, logic output active low, IN1-OUT2 OC3 12 12 O Overcurrent, logic 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

I/O DESCRIPTION

SLVS247 – SEPTEMBER 2000

TPS2044A and TPS2054A

TERMINAL

NO.

TPS2044A TPS2054A

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. Logic output active low, IN1-OUT1 OC2 13 13 O Overcurrent. Logic output active low, IN1-OUT2 OC3 12 12 O Overcurrent. Logic output active low, IN2-OUT3 OC4 9 9 O Overcurrent. Logic 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

I/O DESCRIPTION

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS2041A, TPS2042A, TPS2043A, TPS2044A

†

TPS2051A, TPS2052A, TPS2053A, TPS2054A CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 – SEPTEMBER 2000

detailed description

power switch

The power switch is an N-channel MOSFET with a maximum on-state resistance of 135 mΩ (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 500 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. T o 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

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 µA on the single and dual devices (20 µA on the triple and quad devices) when a logic high is present on ENx (TPS205xA†). A logic zero input on ENx or a logic high on ENx restores bias to the drive and control circuits and turns the power on. The enable input is compatible with both TTL and CMOS logic levels.

overcurrent (OCx)

The OCx encountered. The output will remain asserted until the overcurrent or overtemperature condition is removed.

, ENx)

(TPS204xA†) or a logic low is present on ENx

open-drain output is asserted (active low) when an overcurrent or overtemperature condition is

I(IN)

= 5 V).

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

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 series designations TPS204x and TPS205x refer to devices presented in this data sheet and not necessarily to other TI devices numbered in this sequence.

) open-drain output is asserted (active low) when overtemperature or overcurrent occurs.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS2041A, TPS2042A, TPS2043A, TPS2044A TPS2051A, TPS2052A, TPS2053A, TPS2054A

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 – SEPTEMBER 2000

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

Input voltage range, V Output voltage range, V Input voltage range, V Continuous output current, I

Continuous total power dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating virtual junction temperature range, T Storage temperature range, T

Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . .

Electrostatic discharge (ESD) protection: Human body model MIL-STD-883C 2 kV. . . . . . . . . . . . . . . . . . . . .

†

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.

NOTE 1: All voltages are with respect to GND.

PACKAGE

D–8 725 mW 5.9 mW/°C 464 mW 377 mW

D–16 1123 mW 9 mW/°C 719 mW 584 mW

(see Note 1) –0.3 V to 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I(IN)

O(OUT)

I(ENx)

(see Note 1) –0.3 V to V

or V

I(ENx)

O(OUT)

stg

Machine model 0.2 kV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DISSIPATION RATING TABLE

TA ≤ 25°C

POWER RATING

DERATING FACTOR

ABOVE TA = 25°C

TA = 70°C

POWER RATING

TA = 85°C

POWER RATING

+ 0.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I(IN)

–0.3 V to 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

internally limited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

recommended operating conditions

MIN MAX UNIT

Input voltage, V Input voltage, V Continuous output current, I Operating virtual junction temperature, T

I(IN) I(EN)

or V

I(EN)

O(OUT)

(per switch) 0 500 mA

2.7 5.5 V 0 5.5 V

0 125 °C

†

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TPS2041A, TPS2042A, TPS2043A, TPS2044A

PARAMETER

TEST CONDITIONS

†

UNIT

trRise time, output

tfFall time, output

PARAMETER

TEST CONDITIONS

UNIT

VILLow-level input voltage

IIInput current

PARAMETER

TEST CONDITIONS

†

UNIT

TPS2051A, TPS2052A, TPS2053A, TPS2054A CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 – SEPTEMBER 2000

electrical characteristics over recommended operating junction temperature range, V

= rated current, V

I(EN)

= 0 V, V

I(EN)

= V

(unless otherwise noted)

I(IN)

= 5.5 V,

power switch

TPS204xA TPS205xA

MIN TYP MAX MIN TYP MAX

= 5 V,

I(IN)

IO = 0.5 A

Static drain-source on-state resistance, 5-V operation

DS(on)

Static drain-source on-state resistance, 3.3-V operation

†

Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account separately.

= 5 V,

I(IN)

IO = 0.5 A V

= 5 V,

I(IN)

IO = 0.5 A V

= 3.3 V,

I(IN)

IO = 0.5 A V

= 3.3 V,

I(IN)

IO = 0.5 A V

= 3.3 V,

I(IN)

IO = 0.5 A V

= 5.5 V,

I(IN)

CL = 1 µF, V

= 2.7 V,

I(IN)

CL = 1 µF, V

= 5.5 V,

I(IN)

CL = 1 µF, V

= 2.7 V,

I(IN)

CL = 1 µF,

TJ = 25°C,

TJ = 85°C,

TJ = 125°C,

TJ = 25°C,

TJ = 85°C,

TJ = 125°C,

TJ = 25°C, RL=10 Ω

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

mΩ

enable input ENx or ENx

TPS204xA TPS205xA

MIN TYP MAX MIN TYP MAX

High-level input voltage 2.7 V ≤ V

Turnon time CL = 100 µF, RL=10 Ω 20 20 ms

Turnoff time CL = 100 µF, RL=10 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 V

I(IN)

≤ 4.5 V 0.4 0.4

I(IN)

= 0 V or V = V

or V

I(IN)

I(ENx)

= V

I(IN)

= 0 V –0.5 0.5

–0.5 0.5

current limit

TPS204xA TPS205xA

MIN TYP MAX MIN TYP MAX

= 5 V, OUT connected to GND,

Short-circuit output current

†

Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account separately.

I(IN)

Device enabled into short circuit

0.7 1 1.3 0.7 1 1.3 A

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

+ 22 hidden pages

TEXAS INSTRUMENTS TPS2041A, TPS2042A, TPS2043A, TPS2044A, TPS2051A Technical data

Specifications and Main Features

Frequently Asked Questions

User Manual