L9305A Datasheet, PDF (1/6 Pages) STMicroelectronics – DUAL HIGH CURRENT RELAY DRIVER

L9305A
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)
Powerdip (8 + 8)
ORDERING NUMBER : L9305A
DE SCRI PT I O N
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
to V_S, output overvoltages, supply overvoltage.
BLOCK DIAGRAM
A built in thermal shut-down switches off the device
when the IC’s internal dissipationbecomes 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.
January 1992
1/6
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.