ST890B Просмотр технического описания (PDF) - STMicroelectronics

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ST890B

1.2 A current limited high side power switch with thermal shutdown

STMicroelectronics 

ST890B

ST890C, ST890D

1.2 A current limited high side power switch

with thermal shutdown

Features

■ 2.7 V to 5.5 V input range

■ Programmable current limit up to 1.2 A

■ Low quiescent current

■ Thermal shutdown

■ Active low FAULT indicator output

■ 90 mΩ (typ.) ON resistance

■ SO-8 and DFN8L (3 x 3 mm) packages

Applications

■ PCMCIA slots

■ Access bus slots

■ Portable equipment

SO-8

DFN8L

(3 x 3 mm)

Description

The ST890B, ST890C and ST890D are low

voltage, P-channel MOSFET power switches

intended for high side load switching applications.

These switches operate with inputs from 2.7 V to

5.5 V, making it ideal for both 3 V and 5 V

systems.

The internal current limiting circuitry protects the

input supply against overload. The thermal

overload protection limits power dissipation and

junction temperatures.

The maximum current limit is 1.2 A. The current

limit through the switch is programmed with a

resistor from SET to ground. The devices are

available in SO-8 and DFN8L (3 x 3 mm)

packages.

Table 1.

Device summary

Order code

ST890BDR

ST890CDR

ST890DTR

December 2007

Package

SO-8

SO-8

DFN8L (3 x 3 mm)

Rev 6

Packaging

2500 parts per reel

2500 parts per reel

3000 parts per reel

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