Casio QT-2100 Service Manual page 69

21. XC6201P192MR (IC17)
V NC
OUT
5
4
2 3
1
V V NC
SS IN OUT
22. XC62EP1902MR (IC44)
CE/CE EXT
V
5 4 DD
EXT
1 2 3
V V NC
SS IN OUT
CE
23. XC6365A363MR (IC43)
V
OUT
CE
(FB)
5 4
V
OUT
1 2 3
EXT/ V GND
DD
CE
VIN
Current
Limit
Voltage
Reference
Current
Limit
Reference
Phase
Compensation
Error Amp
Vref whth
PWM/PFM
Soft Start,
Controler
CE
VOUT
VSS
V
OUT
Voltage
V
SS
V
DD
PWM
Controler
Buffer,
EXT/
Drive
Ramp Wave
GND
Generatpr,
OSC
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