MB3769A Datasheet, PDF (3/26 Pages) Fujitsu Component Limited. – SWITCHING REGULATOR CONTROLLER

s BLOCK DIAGRAM
-IN (C) ₁₅
+IN (C) ₁₆
DTC ₄
FB ₃
Fig. 1 - MB3769A Block Diagram
Over Current Detection Comparator
-
S
Q
+
-
+
1.8 V
R
1.85 V
VREF
+
+
+PWM
+Comparator
+
-
STB
STB
+IN (OP) ₁
-IN (OP) ₂
+
Error
Amp.
-
OVP ₁₃
+ ^{Over Voltage Detector}
CT ₅
-
2.5 V
Power
off
1.5 V to 3.5 V
SQ
R
RT ₆
V CC ₁₂
Triangle Wave
(2.5 V) ^Oscillator
+
8/10 V
-
15.4 V
5.0 + 0.1 V
V Z ₁₁
Reference
Regulator
-
+
30 kΩ
GND ₇
MB3769A
10 _VH
9 _OUT
8 _VL
STB
14 VREF
3