JVC XM-R700SL Service Manual page 37

XC6366B102M-X (IC921) : Regulator
1. Pin layout
2. Block diagram
FB
CE
Soft Start,
3. Pin function
No. Pin Name
1 EXT/
2 VDD
3 GND
4
5
5 4
1 2 3
Compensation
Error Amp.
+
-
Vref with
PWM/PFM
Contoroler
CE
Function
EXT transistor connect
Power supply
GND
CE
Chip enable
FB
Output voltage setting
Phase
PWM
Conparator
+
-
Ramp Wave
Generator,
OSC
XM-R700SL
VDD
Buffer,
EXT/
Driver
GND
1-37