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

D 80-mΩ High-Side MOSFET Switch

 

 

TPS2041A, TPS2051A

 

 

TPS2042A, TPS2052A

D 500 mA Continuous Current Per Channel

 

 

 

 

 

D PACKAGE

 

 

 

 

 

 

 

 

D PACKAGE

 

 

 

 

 

 

 

 

 

 

(TOP VIEW)

 

 

 

 

 

 

 

 

(TOP VIEW)

 

 

 

 

D Independent Thermal and Short-Circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Protection With Overcurrent Logic Output

GND

 

1

8

OUT

 

 

GND

1

8

OC1

D Operating Range . . . 2.7 V to 5.5 V

 

 

IN

 

2

7

OUT

 

 

IN

2

7

OUT1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IN

 

3

6

OUT

 

 

EN1²

3

6

OUT2

D CMOSand TTL-Compatible Enable Inputs

 

 

 

 

 

 

 

 

²

 

 

 

 

 

 

 

 

 

 

 

EN2

²

4

5

 

OC2

 

 

EN

 

4

5

OC

 

 

 

 

 

 

D 2.5-ms Typical Rise Time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D

Undervoltage Lockout

 

 

 

TPS2043A, TPS2053A

 

 

TPS2044A, TPS2054A

 

 

 

 

 

 

 

D 10 µA Maximum Standby Supply Current

 

 

 

 

 

 

 

D PACKAGE

 

 

 

 

D PACKAGE

 

 

 

 

 

for Single and Dual (20 µA for Triple and

 

 

 

 

 

 

 

(TOP VIEW)

 

 

 

 

(TOP VIEW)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Quad)

GNDA

 

 

 

 

 

 

GNDA

 

 

 

 

 

1

16

 

OC1

 

1

16

OC1

 

 

 

 

 

D

Bidirectional Switch

 

 

IN1

 

2

15

 

OUT1

 

 

IN1

2

15

OUT1

 

 

 

 

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

 

 

EN1

²

 

3

14

 

OUT2

 

 

EN1

²

3

14

OUT2

 

 

 

 

D

ESD Protection

 

 

EN2

²

 

4

13

 

OC2

 

 

EN2

²

4

13

OC2

 

 

 

 

 

 

GNDB

 

5

12

 

OC3

GNDB

5

12

OC3

D UL Listed ± File No. E169910

 

 

 

 

IN2

 

6

11

 

OUT3

 

 

IN2

6

11

OUT3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

description

 

 

EN3

²

 

7

10

 

NC

 

 

EN3

²

7

10

OUT4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NC

 

8

9

 

NC

 

EN4²

8

9

OC4

 

 

 

 

 

 

 

 

The TPS2041A through TPS2044A and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

² All enable inputs are active high for the TPS205xA series.

 

TPS2051A through TPS2054A power-distribution

switches are intended for applications where

NC ± No connect

 

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.

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

TPS201xA

0.2 A ± 2 A

 

80 mΩ, dual

TPS2042

500 mA

80 mΩ, dual

80 mΩ, triple

80 mΩ, quad

80 mΩ, quad

 

TPS202x

0.2 A ± 2 A

 

 

TPS2052

500 mA

 

 

 

 

 

 

 

 

 

TPS203x

0.2 A ± 2 A

 

 

TPS2046

250 mA

 

 

 

 

 

 

 

 

 

 

 

 

 

TPS2056

250 mA

 

 

 

 

 

 

 

 

80 mΩ, single

TPS2014

600 mA

 

260 mΩ

TPS2100/1

 

TPS2080

500 mA

 

 

 

 

 

 

 

TPS2015

1 A

IN1

 

IN1

500 mA

TPS2081

500 mA

TPS2043

500 mA

 

 

 

 

 

TPS2041

500 mA

 

IN2

10 mA

TPS2082

500 mA

TPS2053

500 mA

TPS2044

500 mA

TPS2085

500 mA

 

IN2

OUT

 

TPS2051

500 mA

TPS2102/3/4/5

TPS2090

250 mA

TPS2047

250 mA

TPS2086

500 mA

 

 

TPS2054

500 mA

 

TPS2045

250 mA

 

1.3 Ω

TPS2091

250 mA

TPS2057

250 mA

TPS2087

500 mA

 

 

IN1

500 mA

TPS2048

250 mA

 

 

TPS2095

250 mA

 

TPS2055

250 mA

 

 

IN2

100 mA

TPS2092

250 mA

 

 

TPS2058

250 mA

 

 

 

 

 

 

 

 

 

TPS2096

250 mA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TPS2097

250 mA

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.

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.

Copyright 2000, Texas Instruments Incorporated

POST OFFICE BOX 655303 DALLAS, TEXAS 75265

1

TPS2041A, TPS2042A, TPS2043A, TPS2044A

TPS2051A, TPS2052A, TPS2053A, TPS2054A

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 ± SEPTEMBER 2000

AVAILABLE OPTIONS

 

 

RECOMMENDED

TYPICAL SHORT-CIRCUIT

NUMBER OF

PACKAGED DEVICES

 

 

MAXIMUM CONTINUOUS

 

TA

ENABLE

CURRENT LIMIT AT 25°C

SOIC

LOAD CURRENT

SWITCHES

 

 

(A)

(A)

 

(D)²

 

 

 

 

 

Active low

 

 

Single

TPS2041AD

 

 

 

 

 

 

Active high

 

 

TPS2051AD

 

 

 

 

 

 

 

 

 

 

 

Active low

 

 

Dual

TPS2042AD

 

 

 

 

 

0°C to 85°C

Active high

0.5

0.9

TPS2052AD

 

 

 

 

Active low

Triple

TPS2043AD

 

 

 

 

 

 

 

 

 

Active high

 

 

TPS2053AD

 

 

 

 

 

 

 

 

 

 

 

Active low

 

 

Quad

TPS2044AD

 

 

 

 

 

 

Active high

 

 

TPS2054AD

 

 

 

 

² The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2041ADR)

2

POST OFFICE BOX 655303 DALLAS, TEXAS 75265

TPS2041A, TPS2042A, TPS2043A, TPS2044A

TPS2051A, TPS2052A, TPS2053A, TPS2054A

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 ± SEPTEMBER 2000

functional block diagrams

TPS2041A

 

Power Switch

 

 

 

 

²

 

IN

 

CS

OUT

 

Charge

 

 

 

Pump

 

 

EN³

Driver

Current

 

Limit

 

 

 

 

 

 

 

OC

 

UVLO

 

 

 

Thermal

 

 

GND

Sense

 

 

²Current sense

³Active high for TPS205xA series

TPS2042A

 

 

 

OC1

GND

Thermal

 

 

Sense

 

 

 

 

 

EN1³

 

 

 

 

Driver

Current

 

 

Limit

 

 

 

 

 

Charge

 

 

 

Pump

 

²

 

 

 

 

 

CS

OUT1

 

UVLO

 

 

 

Power Switch

 

²

IN

CS

OUT2

Charge

 

Pump

 

Driver

Current

Limit

 

 

OC2

EN2³

Thermal

Sense

²Current sense

³Active high for TPS205xA series

POST OFFICE BOX 655303 DALLAS, TEXAS 75265

3

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

SLVS247 ± SEPTEMBER 2000

functional block diagrams

TPS2043A

GNDA

OC1

Thermal

Sense

EN1³

Driver

Current

 

Limit

 

 

 

Charge

 

 

Pump

 

²

 

 

 

CS

OUT1

UVLO

 

 

 

Power Switch

 

²

IN1

CS

OUT2

Charge

 

Pump

 

Driver

Current

Limit

 

 

OC2

EN2³

Thermal

Sense

 

Power Switch

 

 

 

 

²

 

IN2

 

CS

OUT3

 

Charge

 

 

 

Pump

 

 

EN3³

Driver

Current

 

Limit

 

 

 

 

 

 

 

OC3

 

UVLO

 

 

 

Thermal

 

 

GNDB

Sense

 

 

²Current sense

³Active high for TPS205xA series

4

POST OFFICE BOX 655303 DALLAS, TEXAS 75265

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

TPS2041A, TPS2042A, TPS2043A, TPS2044A

TPS2051A, TPS2052A, TPS2053A, TPS2054A

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 ± SEPTEMBER 2000

functional block diagrams

TPS2044A

OC1

GNDA

Thermal

 

 

Sense

 

 

 

 

 

EN1³

 

 

 

 

Driver

Current

 

 

Limit

 

 

 

 

 

Charge

 

 

 

Pump

 

²

 

 

 

 

 

CS

OUT

 

UVLO

 

1

 

Power Switch

 

 

 

 

²

IN1

 

CS

OUT

 

Charge

 

2

 

 

 

 

Pump

 

 

 

Driver

Current

 

 

Limit

 

 

 

 

EN2³

 

 

OC2

 

 

 

Thermal

Sense

OC3

GNDB

Thermal

Sense

 

EN3³

IN2

EN4³

² Current sense

Driver

Current

 

Limit

 

 

 

Charge

 

 

Pump

 

²

 

 

 

CS

OUT3

UVLO

 

 

Power Switch

 

²

CS

OUT4

Charge

 

Pump

 

Driver

Current

Limit

 

 

OC4

Thermal

Sense

³ Active high for TPS205xA series

POST OFFICE BOX 655303 DALLAS, TEXAS 75265

5

TPS2041A, TPS2042A, TPS2043A, TPS2044A

TPS2051A, TPS2052A, TPS2053A, TPS2054A

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 ± SEPTEMBER 2000

 

 

 

 

 

 

 

 

 

 

 

 

Terminal Functions

TPS2041A and TPS2051A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TERMINAL

 

 

 

 

 

 

 

 

 

 

 

 

 

I/O

DESCRIPTION

 

NAME

NO.

 

 

 

 

 

 

TPS2041A

 

TPS2051A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

±

I

Enable input. Logic low turns on power switch.

 

EN

 

 

 

 

 

 

 

 

EN

±

 

4

I

Enable input. Logic high turns on power switch.

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

1

 

1

I

Ground

 

 

 

 

 

 

 

 

 

 

 

 

 

IN

2, 3

 

2, 3

I

Input voltage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

5

O

Overcurrent. Logic output active low

 

OC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUT

6, 7, 8

 

6, 7, 8

O

Power-switch output

 

 

 

 

 

 

 

 

 

 

 

 

TPS2042A and TPS2052A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TERMINAL

 

 

 

 

 

 

 

 

 

 

 

 

I/O

DESCRIPTION

 

NAME

NO.

 

 

 

 

 

 

 

TPS2042A

 

TPS2052A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

±

I

Enable input. Logic low turns on power switch, IN-OUT1.

 

EN1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

±

I

Enable input. Logic low turns on power switch, IN-OUT2.

 

EN2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

8

O

Overcurrent. Logic output active low, for power switch, IN-OUT1

 

OC1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

5

O

Overcurrent. Logic output active low, for power switch, IN-OUT2

 

OC2

 

 

 

 

 

 

 

 

 

 

OUT1

7

 

7

O

Power-switch output

 

 

 

 

 

 

 

 

OUT2

6

 

6

O

Power-switch output

6

POST OFFICE BOX 655303 DALLAS, TEXAS 75265

 

 

 

 

 

 

 

 

 

 

 

TPS2041A, TPS2042A, TPS2043A, TPS2044A

 

 

 

 

 

 

 

 

 

 

 

TPS2051A, TPS2052A, TPS2053A, TPS2054A

 

 

 

 

 

 

 

 

 

 

 

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

 

 

 

 

 

 

 

 

 

 

 

SLVS247 ± SEPTEMBER 2000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Terminal Functions (Continued)

TPS2043A and TPS2053A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TERMINAL

 

 

 

 

 

 

 

 

 

 

 

 

 

I/O

DESCRIPTION

 

 

NAME

NO.

 

 

 

 

 

 

 

 

TPS2043A

 

TPS2053A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

±

I

Enable input, logic low turns on power switch, IN1-OUT1.

 

 

EN1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

±

I

Enable input, logic low turns on power switch, IN1-OUT2.

 

 

EN2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

±

I

Enable input, logic low turns on power switch, IN2-OUT3.

 

 

EN3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8, 9, 10

 

8, 9, 10

 

No connection

 

 

NC

 

 

 

 

 

 

 

 

 

 

 

 

 

16

 

16

O

Overcurrent, logic output active low, IN1-OUT1

 

 

OC1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13

 

13

O

Overcurrent, logic output active low, IN1-OUT2

 

 

OC2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

 

12

O

Overcurrent, logic output active low, IN2-OUT3

 

 

OC3

 

 

 

 

 

 

 

 

 

 

 

 

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

 

TPS2044A and TPS2054A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TERMINAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NAME

NO.

I/O

DESCRIPTION

 

 

TPS2044A

 

TPS2054A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

±

I

Enable input. logic low turns on power switch, IN1-OUT1.

 

 

EN1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

±

I

Enable input. Logic low turns on power switch, IN1-OUT2.

 

 

EN2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

±

I

Enable input. Logic low turns on power switch, IN2-OUT3.

 

 

EN3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

±

I

Enable input. Logic low turns on power switch, IN2-OUT4.

 

 

EN4

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16

 

16

O

Overcurrent. Logic output active low, IN1-OUT1

 

 

OC1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13

 

13

O

Overcurrent. Logic output active low, IN1-OUT2

 

 

OC2

 

 

 

 

 

 

 

 

 

 

12

 

12

O

Overcurrent. Logic output active low, IN2-OUT3

 

 

OC3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

 

9

O

Overcurrent. Logic output active low, IN2-OUT4

 

 

OC4

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POST OFFICE BOX 655303 DALLAS, TEXAS 75265

7

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 (VI(IN) = 5 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. 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 µA on the single and dual devices (20 µA on the triple and quad devices) when a logic high is present on ENx (TPS204xA² ) or a logic low is present on ENx (TPS205xA² ). 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 open-drain output is asserted (active low) when an overcurrent or overtemperature condition is encountered. The output will remain asserted until the overcurrent or overtemperature 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 overtemperature 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.

²Product series designations TPS204x and TPS205x refer to devices presented in this data sheet and not necessarily to other TI devices numbered in this sequence.

8

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)²

Input voltage range, VI(IN) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3 V to 6 V Output voltage range, VO(OUT) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3 V to VI(IN) + 0.3 V Input voltage range, VI(ENx) or VI(ENx) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3 V to 6 V Continuous output current, IO(OUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . internally limited Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table

Operating virtual junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 125°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±65°C to 150°C 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 Machine model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.2 kV

²Stresses beyond those listed under ªabsolute maximum ratingsº 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 ªrecommended operating conditionsº 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.

 

 

DISSIPATION RATING TABLE

 

PACKAGE

TA 25°C

DERATING FACTOR

TA = 70°C

TA = 85°C

POWER RATING

ABOVE TA = 25°C

POWER RATING

POWER RATING

 

D±8

725 mW

5.9 mW/°C

464 mW

377 mW

D±16

1123 mW

9 mW/°C

719 mW

584 mW

recommended operating conditions

 

 

 

MIN

MAX

UNIT

 

 

 

 

 

 

Input voltage, VI(IN)

2.7

5.5

V

 

 

 

 

 

 

Input voltage, VI(EN)

or VI(EN)

0

5.5

V

Continuous output current, IO(OUT) (per switch)

0

500

mA

Operating virtual junction temperature, TJ

0

125

°C

POST OFFICE BOX 655303 DALLAS, TEXAS 75265

9

TPS2041A, TPS2042A, TPS2043A, TPS2044A

TPS2051A, TPS2052A, TPS2053A, TPS2054A

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 ± SEPTEMBER 2000

electrical characteristics over recommended operating junction temperature range, VI(IN)= 5.5 V, IO = rated current, VI(EN) = 0 V, VI(EN) = VI(IN) (unless otherwise noted)

power switch

 

PARAMETER

TEST CONDITIONS²

TPS204xA

 

TPS205xA

 

UNIT

 

 

 

 

 

 

MIN TYP

MAX

MIN TYP

MAX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VI(IN) = 5 V,

TJ = 25°C,

80

100

80

100

 

 

 

IO = 0.5 A

 

 

 

 

 

 

 

 

 

 

 

Static drain-source on-state

VI(IN) = 5 V,

TJ = 85°C,

90

120

90

120

 

 

resistance, 5-V operation

IO = 0.5 A

 

 

 

 

 

 

 

 

 

 

 

VI(IN) = 5 V,

TJ = 125°C,

100

135

100

135

 

 

IO = 0.5 A

 

rDS(on)

 

 

 

 

 

 

 

 

VI(IN) = 3.3 V,

TJ = 25°C,

90

125

90

125

 

 

 

IO = 0.5 A

 

 

 

 

 

 

 

 

 

 

 

Static drain-source on-state

VI(IN) = 3.3 V,

TJ = 85°C,

110

145

110

145

 

 

resistance, 3.3-V operation

IO = 0.5 A

 

 

 

 

 

 

 

 

 

 

 

VI(IN) = 3.3 V,

TJ = 125°C,

120

160

120

160

 

 

 

IO = 0.5 A

 

 

 

 

 

 

 

 

 

 

 

 

VI(IN) = 5.5 V,

TJ = 25°C,

2.5

 

2.5

 

 

 

 

CL = 1 µF,

RL=10 Ω

 

 

 

tr

Rise time, output

 

 

 

 

ms

VI(IN) = 2.7 V,

TJ = 25°C,

3

 

3

 

 

 

CL = 1 µF,

RL=10 Ω

 

 

 

 

 

 

 

 

 

 

 

 

VI(IN) = 5.5 V,

TJ = 25°C,

4.4

 

4.4

 

 

 

 

CL = 1 µF,

RL=10 Ω

 

 

 

tf

Fall time, output

 

 

 

 

ms

VI(IN) = 2.7 V,

TJ = 25°C,

2.5

 

2.5

 

 

 

 

 

 

 

 

CL = 1 µF,

RL=10 Ω

 

 

 

 

 

 

 

 

 

 

² Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account separately.

enable input ENx or ENx

 

PARAMETER

 

 

TEST CONDITIONS

TPS204xA

 

TPS205xA

 

UNIT

 

 

 

 

 

 

 

 

 

 

MIN TYP

MAX

MIN TYP

MAX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VIH

High-level input voltage

2.7

V ≤ VI(IN) ≤ 5.5 V

2

 

2

 

V

VIL

Low-level input voltage

4.5

V ≤ VI(IN) ≤ 5.5 V

 

0.8

 

0.8

V

2.7

V≤ VI(IN) ≤ 4.5 V

 

0.4

 

0.4

 

 

 

 

 

 

 

II

Input current

TPS204xA

V

I(ENx)

= 0 V or V

I(ENx)

= VI(IN)

±0.5

0.5

 

 

µA

TPS205xA

VI(ENx) = VI(IN) or VI(ENx) = 0 V

 

 

±0.5

0.5

 

 

 

 

 

ton

Turnon time

CL = 100 µF,

RL=10 Ω

 

20

 

20

ms

toff

Turnoff time

CL = 100 µF,

RL=10 Ω

 

40

 

40

 

current limit

PARAMETER

TEST CONDITIONS²

TPS204xA

 

TPS205xA

 

UNIT

 

 

 

 

 

 

MIN

TYP

MAX

MIN

TYP

MAX

 

 

 

 

 

 

 

 

 

 

 

 

IOS Short-circuit output current

VI(IN) = 5 V, OUT connected to GND,

0.7

1

1.3

0.7

1

1.3

A

Device enabled into short circuit

 

 

 

 

 

 

 

 

² Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account separately.

10

POST OFFICE BOX 655303 DALLAS, TEXAS 75265

TPS2041A, TPS2042A, TPS2043A, TPS2044A

TPS2051A, TPS2052A, TPS2053A, TPS2054A

CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 ± SEPTEMBER 2000

electrical characteristics over recommended operating junction temperature range, VI(IN)= 5.5 V, IO = rated current, VI(EN) = 0 V, VI(EN) = VI(IN) (unless otherwise noted) (continued)

supply current (TPS2041A, TPS2051A)

PARAMETER

 

 

TEST CONDITIONS

 

 

 

 

TPS2041A

 

TPS2051A

 

UNIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MIN

TYP

MAX

MIN TYP

MAX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TJ = 25°C

 

 

 

0.025

1

 

 

 

 

 

VI(EN)

 

= VI(IN)

 

 

 

 

 

 

 

 

 

 

 

Supply current, low-level

No Load

 

°

TJ

°

 

 

10

 

 

 

 

 

 

 

±40 C

 

 

125 C

 

 

 

 

A

output

on OUT

 

 

 

 

 

°

 

 

 

 

 

 

0.025

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VI(EN)

= 0 V

TJ = 25 C

 

 

 

 

 

 

 

 

±40°C

TJ

125°C

 

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TJ = 25°C

 

 

 

85

110

 

 

 

 

 

VI(EN)

= 0 V

 

 

 

 

 

 

Supply current,

No Load

±40°C

TJ

125°C

 

100

 

 

 

A

 

 

 

 

 

 

 

 

high-level output

on OUT

 

 

 

 

 

°

 

 

 

 

 

 

85

110

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VI(EN)

= VI(IN)

TJ = 25 C

 

 

 

 

 

 

 

 

±40°C

TJ

125°C

 

 

 

100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUT

 

 

 

 

°

 

°

 

 

 

 

 

 

 

VI(EN)

= VI(IN)

TJ

 

100

 

 

 

 

Leakage current

connected

±40 C

 

 

125 C

 

 

 

 

A

VI(EN)= 0 V

±40°C TJ 125°C

 

 

 

100

 

 

to ground

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reverse leakage current

IN = High

VI(EN

) = 0 V

TJ = 25°C

 

 

 

0.3

 

 

 

A

impedance

VI(EN)

= VI(IN)

 

 

 

 

 

0.3

 

 

 

 

 

 

 

 

 

 

 

 

 

supply current (TPS2042A, TPS2052A)

PARAMETER

 

 

TEST CONDITIONS

 

 

 

 

TPS2042A

 

TPS2052A

 

UNIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MIN

TYP

MAX

MIN TYP

MAX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V

 

 

= VI(IN)

TJ = 25°C

 

 

 

0.025

1

 

 

 

 

 

I(ENx)

 

 

 

 

 

 

 

 

 

 

 

Supply current, low-level

No Load

°

TJ

°

 

 

10

 

 

 

 

 

 

 

±40 C

 

 

125 C

 

 

 

 

A

output

on OUT

 

 

 

 

 

°

 

 

 

 

 

 

0.025

1

 

 

VI(ENx) = 0 V

TJ = 25 C

 

 

 

 

 

 

 

 

±40°C

TJ

125°C

 

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TJ = 25°C

 

 

 

85

110

 

 

 

 

 

VI(ENx) = 0 V

 

 

 

 

 

 

Supply current,

No Load

±40°C

TJ

125°C

 

100

 

 

 

A

 

 

 

 

 

 

 

 

high-level output

on OUT

 

 

 

 

 

°

 

 

 

 

 

 

85

110

 

 

VI(ENx) = VI(IN)

TJ = 25 C

 

 

 

 

 

 

 

 

±40°C

TJ

125°C

 

 

 

100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUT

 

 

 

 

°

 

°

 

 

 

 

 

 

 

VI(ENx) = VI(IN)

TJ

 

100

 

 

 

 

Leakage current

connected

±40 C

 

 

125 C

 

 

 

 

A

VI(ENx) = 0 V

±40°C TJ 125°C

 

 

 

100

 

 

to ground

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reverse leakage current

IN = high

VI(EN)

= 0 V

TJ = 25°C

 

 

 

0.3

 

 

 

A

impedance

VI(EN) = VI(IN)

 

 

 

 

 

0.3

 

 

 

 

 

 

 

 

 

 

 

 

 

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11

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