mb3769apf Fujitsu Microelectronics, Inc., mb3769apf Datasheet - Page 3

• Manufacturer Part Number: mb3769apf
• Description: Switching Regulator Controller
• Manufacturer: Fujitsu Microelectronics, Inc.

BLOCK DIAGRAM
+IN
-IN
+IN
-IN
GND
DTC
OVP
V
(OP)
C
R
V
FB
(OP)
CC
T
T
Z
(C)
(C)
15
16
13
12
11
4
3
1
2
5
6
7
15.4 V
30 k
(2.5 V)
2.5 V
1.5 V to 3.5 V
+
+
Error
Amp.
-
-
+
-
1.8 V
Triangle Wave
+
-
Oscillator
STB
Power
Reference
Regulator
Over Current Detection Comparator
off
Over Voltage Detector
Fig. 1 - MB3769A Block Diagram
1.85 V
S
R
V
REF
5.0 + 0.1 V
R
S
Q
8/10 V
Q
+
+
+
+
+
-
PWM
Comparator
+
+
-
-
STB
MB3769A
10
14
9
8
OUT
V
V
V
STB
H
L
REF
3