Data Brief

December 2005

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For further information contact your local STMicroelectronics sales office.

Rev. 1

STMPS2262

STMPS2272

Enhanced Power Switch

Features

■

80m

Ω HIGH-SIDE MOSFET SWITCH

■

1000mA CONTINUOUS CURRENT PER

CHANNEL

■

INDEPENDENT THERMAL AND SHORT-

CIRCUIT PROTECTION WITH

OVERCURRENT LOGIC OUTPUT

■

OPERATING RANGE FROM 2.7V TO 5.5V

■

2.5ms TYPICAL RISE TIME

■

UNDERVOLTAGE LOCKOUT

■

10

µA MAXIMUM STANDBY SUPPLY

CURRENT

■

AMBIENT TEMPERATURE RANGE, 0°C TO

85°C

■

8kV ESD PROTECTION

■

REVERSE CURRENT PROTECTION

■

FAULT-BLANKING

Description

These devices power distribution switches are

intended for application where heavy capacitive

loads

and

short

circuits

are

likely

to

be

encountered. These devices incorporate 80m

Ω N-

channel MOSFET high-side power switches for

power-distribution systems that require multiple

powers 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.

SO-8

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Order Codes

Part Number

Channel

Current Limit (mA)

Enable

Package

STMPS2262MTR

2

80

1000

Active Low

SO-8

STMPS2272MTR

2

80

1000

Active High

SO-8