STMPS2252MTR 데이터 시트보기 (PDF) - STMicroelectronics

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STMPS2252MTR

Enhanced dual-channel power switches

STMicroelectronics 

STMPS2242, STMPS2252

STMPS2262, STMPS2272

Enhanced dual-channel power switches

Features

■ 100 mΩ high-side MOSFET switch

■ 500 mA/1000 mA continuous current per

channel

■ Thermal protection

■ Independent short-circuit protection with

overcurrent logic output

■ Operating range from 2.7 V to 5.5 V

■ CMOS and TTL compatible inputs

■ 2.5 ms typical rise time

■ Undervoltage lockout

■ 13 µA maximum standby supply current

■ Ambient temperature range: -40 °C to 85 °C

■ 8 kV ESD protection

■ Reverse current protection

■ Fault blanking

Description

The STMPS2242/2252/2262/2272 power

distribution switches are intended for applications

where heavy capacitive loads and short-circuits

are likely to be encountered. These devices

incorporate 100 mΩ MOSFET high-side power

switches for power distribution systems that

require multiple power switches in a single

package.

SO-8

MSOP8

Each switch is controlled by an independent logic

enable input. 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.

Table 1. Device summary

Order code

SO-8

MSOP8(1)

STMPS2242MTR STMPS2242TTR

STMPS2252MTR

STMPS2262MTR

STMPS2272MTR

STMPS2252TTR

STMPS2262TTR

STMPS2272TTR

1. MSOP8 is also known as TSSOP8.

Current limit

(mA)

500

500

1000

1000

Enable

Active low

Active high

Active low

Active high

Packing

Tape and reel

Tape and reel

Tape and reel

Tape and reel

January 2011

Doc ID 15050 Rev 3

1/42

www.st.com

42

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