TPS2043, TPS2053

TRIPLE POWER-DISTRIBUTION SWITCHES

SLVS191 – JANUARY 1999

1

POST OFFICE BOX 655303

MOSFET Switch

Overcurrent Logic Output

Machine-Model ESD Protection

description

The

TPS2043

and

TPS2053

triple

power

distribution switches are intended for applications

where heavy capacitive loads and short circuits

are likely to be encountered. The TPS2043 and

the TPS2053 incorporate in single packages three 135-m

Ω N-channel MOSFET high-side power switches for

power-distribution systems that require multiple power switches. Each switch is controlled by a logic enable that

is compatible with 5-V logic and 3-V logic. Gate drive is provided by an internal charge pump that controls the

power-switch rise times and fall times to minimize current surges during switching. The charge pump, requiring

no external components, allows operation from supplies as low as 2.7 V.

When the output load exceeds the current-limit threshold or a short is present, the TPS2043 and TPS2053 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.

The TPS2043 and TPS2053 are designed to limit at 0.9-A load. These power distribution switches are available

in a 16-pin small-outline integrated circuit (SOIC) package and operate over an ambient temperature range of

–40

°C to 85°C.

AVAILABLE OPTIONS

RECOMMENDED MAXIMUM

TYPICAL SHORT-CIRCUIT

PACKAGED DEVICES

TA

ENABLE

CONTINUOUS LOAD CURRENT

(A)

CURRENT LIMIT AT 25

°C

(A)

SOIC

(D)†

–40

°C to 85°C

Active low

0.5

0.9

TPS2043D

–40

°C to 85°C

Active high

0.5

0.9

TPS2053D

† The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2043DR)

Copyright

© 1999, Texas Instruments Incorporated

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.

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.

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2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

GND1

IN1

EN1

EN2

GND2

IN2

EN3

NC

OC1

OUT1

OUT2

OC2

OC3

OUT3

NC

NC

TPS2043

D PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

GND1

IN1

EN1

EN2

GND2

IN2

EN3

NC

OC1

OUT1

OUT2

OC2

OC3

OUT3

NC

NC

TPS2053

D PACKAGE

(TOP VIEW)

NC – No internal connection