MB3778 Datasheet, PDF (4/29 Pages) Fujitsu Component Limited. – Switching Regulator Controller

MB3778
s BLOCK DIAGRAM
2.46 V
16
Reference
Voltage
2.46 V
Error Amp 1
3+
4−
5
12
Error Amp 2
13
−
+
1.23 V
15
9
14
Power
Supply
Control
1.9 V
1.3 V
S.C.P. Comp
−+−
2.1 V
2.46 V
1 µA
RS
Latch
R
U. V. L. O.
1
2
1.23 V
Triangular
Oscillator
OUT1
7
−++
PWM Comp1
−++
OUT2
10
PWM Comp2
D.T.C. Comp.
8
1.1 V
6 11
4