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L9821

HIGH SIDE DRIVER

STMicroelectronics 

L9821

. 25A PEAK OUTPUT CURRENT

. RON = 100mΩ

. DIAGNOSTIC AND PROTECTION

FUNCTIONS

. µP COMPATIBLE

. GROUNDED CASE

. INRUSH CURRENT LIMITING CIRCUIT

HIGH SIDE DRIVER

MULTIPOWER BCD TECHNOLOGY

DESCRIPTION

The L9821 High Side Driver realized with Multipo-

wer - BCD mixed technology, drives resistive or in-

ductive loads with one side connected to ground.

The input control is TTL compatible and a diagnos-

tic output provides an indication of load (open and

short) and device status (thermal and overvoltage

shutdown).Onchip thermalprotectionand short cir-

cuit protection are provided.

Pentawatt

ORDERING NUMBER : L9821

The device is assembled in the Pentawattpackage

with the tab connected to the ground terminal.

BLOCK DIAGRAM

February 1997

1/7

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