TDF1779A
DESCRIPTION
The TDF1779A is a dual source driver delivering hihg outputcurrents and the capabilityto drive highly inductive loads (Electrovalves, contractors, relays...). This device is essentially blow-out proof, each output is protected against short-circuits. If internal dissipation bees too high, drivers will shut down to prevent excessive heating. An ”ALARM” output is provided to indicate the action of the thermal protection. 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 possibility of disabling the power outputs. PIN CONNECTION
ORDERING NUMBER : TDE 1779ASP
12345678910 11 Tab is connected to pin 6
Output 1 VCC Output 2 N.C. Strobe Ground Input 2 Sense output Alarm output Reset input Input 1
April 1993
1/9
BLOCK DIAGRAM
MAXIMUM RATINGS
Symbol VCC VI , Vreset Vstrobe IO Ptot Toper Supply Voltage...
