TPS2020, TPS2021, TPS2022, TPS2023, TPS2024

POWER-DISTRIBUTION SWITCHES

SLVS175A – DECEMBER 1998 – REVISED NOVEMBER 1999

1

POST OFFICE BOX 655303

Switch

Current ...10

µA

Machine-Model ESD Protection

description

The TPS202x family of power distribution switches is intended for applications where heavy capacitive loads

and short circuits are likely to be encountered. These devices are 50-m

Ω N-channel MOSFET high-side power

switches. The switch is controlled by a logic enable compatible with 5-V logic and 3-V logic. 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, the TPS202x limits the output

current to a safe level by switching into a constant-current mode, pulling the overcurrent (OC) 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 TPS202x devices differ only in short-circuit current threshold. The TPS2020 limits at 0.3-A load, the

TPS2021 at 0.9-A load, the TPS2022 at 1.5-A load, the TPS2023 at 2.2-A load, and the TPS2024 at 3-A load

(see Available Options). The TPS202x is available in an 8-pin small-outline integrated-circuit (SOIC) package

and in an 8-pin dual-in-line (DIP) package and operates over a junction temperature range of – 40

°C to 125°C.

TPS201xA

TPS202x

TPS203x

33 m

Ω, single

0.2 A – 2 A

0.2 A – 2 A

0.2 A – 2 A

TPS2014

TPS2015

TPS2041

TPS2051

TPS2045

TPS2055

80 m

Ω, single

600 mA

1 A

500 mA

500 mA

250 mA

250 mA

GENERAL SWITCH CATALOG

TPS2042

TPS2052

TPS2046

TPS2056

80 m

Ω, dual

500 mA

500 mA

250 mA

250 mA

TPS2100/1

260 m

Ω

IN1

500 mA

IN2

10 mA

OUT

IN1

IN2

TPS2102/3/4/5

IN1

500 mA

IN2

100 mA

1.3

Ω

TPS2043

TPS2053

TPS2047

TPS2057

80 m

Ω, triple

500 mA

500 mA

250 mA

250 mA

TPS2044

TPS2054

TPS2048

TPS2058

80 m

Ω, quad

500 mA

500 mA

250 mA

250 mA

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.

1

2

3

4

8

7

6

5

GND

IN

IN

EN

OUT

OUT

OUT

OC

D OR P PACKAGE

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