TDF1779A

April 1993

DUAL 2-A SOURCE DRIVER

.

OUTPUT CURRENT UP TO 2.5 A

.

WIDE RANGE OF SUPPLY VOLTAGE : + 8 V

TO + 26 V

.

CAN WITHSTAND OVERVOLTAGES OF AS

.

OUTPUT VOLTAGE CAN SWING TO LOWER

THAN GROUND

.

”SENSE” AND ”ALARM” OUTPUTS ARE OPEN

COLLECTOR OUTPUTS

DESCRIPTION

The TDF1779A is a dual source driver delivering

hihg outputcurrents and the capabilityto drive highly

inductive loads (Electrovalves, contractors, re-

lays...).

This device is essentially blow-out proof, each out-

put is protected against short-circuits. If internal dis-

sipation becomes too high, drivers will shut down to

prevent excessive heating. An ”ALARM” output is

provided to indicate the action of the thermal protec-

tion. To reactivate the power outputs, the reset input

must be forced to low state.

”SENSE” information of both power outputs are

ORed together and then processed internally.

A ”STROBE” input is also provided to offer the pos-

sibility of disabling the power outputs.

MULTIWATT-11

ORDERING NUMBER : TDE 1779ASP

Tab is connected to pin 6

1 - Output 1

3 - Output 2

4 - N.C.

5 - Strobe

6 - Ground

7 - Input 2

8 - Sense output

9 - Alarm output

10 - Reset input

11 - Input 1

PIN CONNECTION

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