L9305A

January 1992

DUAL HIGH CURRENT RELAY DRIVER

.

HIGH OUTPUT CURRENT

.

HYSTERESIS INPUT COMPARATOR WITH

WIDE RANGE COMMON MODE OPERATION

AND GROUND COMPATIBLE INPUTS

.

INPUT COMPARATOR HYSTERESIS

.

INTERNAL THERMAL PROTECTION WITH

HYSTERESIS

.

INTERNAL OUTPUT OVERVOLTAGE CLAMP-

ING

.

SINGLE SUPPLY VOLTAGE (3.5V up to 18V)

DESCRIPTION

The L9305A is a monolithic interface circuit with dif-

ferentialinput comparator and open collector output

able to sink high current specifically to drive relays,

lamps, d.c. motors.

Particular care has been taken to protect the device

against destructive failures - short circuit of outputs

1/6

This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

A built in thermal shut-down switches off the device

when the IC’s internal dissipation becomes too great

and the chip temperature exceeds a set security

threshold.

A hysteresis input comparatorincreases the interfa-

ce’s noise immunity, allowing the correct use also in

critical environments as automotive or industrial ap-

plications.

Powerdip (8 + 8)

ORDERING NUMBER : L9305A

BLOCK DIAGRAM