MB3800_06 Datasheet, PDF (3/20 Pages) Fujitsu Component Limited. – Switching Regulator Controller (Low Voltage)

■ BLOCK DIAGRAM
MB3800
–IN
1
FB
8
V CC
OSC
3
7
Reference
voltage supply
0.6 V–
0.1 V–
1.25 V
–
36 kΩ
+
Error Amp
0.5 V
500 Ω
Sawtooth wave
oscillator
0.1 V
PWM
– Comp.
+
+
+
DTC 0.6 V
Output drive
control circuit
0.3 V
6
GND
Soft start SCP
2
SCP
4
BR/CTL
OUT
5
30 kΩ
3