JVC TH-A75R Service Manual page 73

4.46 STR-G6651 (IC121) : Switching regulator
• Block diagram
• Pin function
Pin No. Symbol
1 D Drain terminal
2 S Source terminal
3 GND Ground terminal
4 Vin Power supply terminal
5 O.C.P/F.B Over current / Feedback terminal
Description
MOS FET drain
MOS FET source
Ground
Input of power supply for control circuit
Input of over current detection signal and constant voltage control signal
Function
(No.21189)1-73
TH-A75R