Casio QT-2100 - Page 69

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