Service manual

38
2) Function of Each Termiinal
3) Other Function
4) Internal Circuit Constant
No. of Terminal Symbol Description Function
1 C Collector Terminal Collector of TRr(Power Transistor)
2 GND Ground Terminal Ground(Emitter of PTr)
3 B Base Terminal Base of PTr
4 SINK Sink Terminal Base Current (IS) Input
5 OCP Overcurrent Protection Terminal Overcurrent Sensing Signal Input
6 INH
Inhibit Terminal Off Time Synchronizing
Latch Terminal Latch Circuit Operation Signal Input
7 SENS Sensing Terminal Constant Voltage Control Signal Input
8 DRIVE Drive Terminal Base Drive Currnet(ID) Output
9 VIN VIN Terminal Control Circuit Power Supply Input
Symbol Function
OVP Built-in Overvoltage Protecton circuit
TSD Built-In Thermal Shutdown Circuit
R1 T ON Adjustment Trimming Resistor R7 14KΩ C4 0.01µF
R2 T OFF Adjustment Trimming Resistor R8 2.5K C5 1500pF
R3 1.0kΩ R9 35kΩ
R4 100Ω C1 3300pF
R5 85Ω C2 0.01µF
R6 Vs Adjustment Trimming Resistor C3 820pF