MB3769A Datasheet, PDF (18/26 Pages) Fujitsu Component Limited. – SWITCHING REGULATOR CONTROLLER

MB3769A
s SYNCHRONIZED OUTSIDE CLOCK CIRCUIT
Fig. 20
5V
1V
10 V
VP (5 V/div)
CT (1 V/div)
GND Level (CT)
OUT (10 V/div)
500 nS
1.No Clamp Circuit (Connect with GND)
CT = 150 pF + Prove Capacitor (~ 15 pF)
RT = 11 kΩ
5 pin
CT
150 pF
MB74HC04
VP
5.1 kΩ
Fig. 21
5V
1V
10 V
Fig. 22
5V
1V
10 V
VP (5 V/div)
CT (1 V/div)
GND Level (CT)
500 nS
OUT (10 V/div)
2.Clamp Circuit A (Dividing Resistor)
CT = 220 pF + Prove capacitor (~ 15 pF)
RT = 11 kΩ
5 pin
CT
220 pF
MB74HC04
VP
5.1 kΩ
VREF
4.7 kΩ
0.1 _{1.2 kΩ}
µF
VP (5 V/div)
CT (1 V/div)
GND Level (CT)
500 nS
OUT (10 V/div)
3.Clamp Circuit B (Apply MB3761)
CT = 220 pF + Prove capacitor (~ 15 pF)
RT = 11 kΩ
5 pin
CT
220 pF
MB74HC04
5.1 kΩ
VP
VREF
820 Ω
0.1 µF
38
MB3761
4
5
18