Latch Circuit; Ic2 (On Sub Board) - Panasonic KX-TDA0103XJ Service Manual

KX-TDA0103XJ / KX-TDA0104XJ / KX-TDA0108XJ / KX-TDA0103X / KX-TDA0104X / KX-TDA0108X

3) Latch Circuit

When secondary side protection circuit (Refer to Protection Circuit (P.29)) worked in abnormal state, the signal is sent to OVP
terminal (Pin8 of IC2) of primary side through PC4. Therefore, switching operation of Q11 is stopped and the main converter
operation is stopped.

IC2 (on Sub board)

Pin1 Corrector
Pin2 Vout
Pin3 Emitter
Pin4 VF
Pin7 ON/OFF
Pin8 OVP
Pin9 DET
Pin10 F/B
Pin11 T-ON
Pin12 CF
Pin13 T-OFF
Pin14 CT
Pin17 GND
Pin18 CLM-
Pin19 CLM+
Pin20 Vcc
Pin5, 615, 16 Heat Sink Pin
20