stk740-411 Sanyo Semiconductor Corporation, stk740-411 Datasheet - Page 3

• Manufacturer Part Number: stk740-411
• Description: 3.3v/5a Single Output Separate Excitation Chopper Regulator
• Manufacturer: Sanyo Semiconductor Corporation

Block Diagram
Pin Descriptions
V
V
GND
CC
IN
Number
P O
U J
T B
12
11
F O
6
5
N Q
D P
F
B T
SUB
Q I
7
Reference voltage
0 6 5
L
V U
P D
O U
"
U Q
C M
N F
Oscillator
P V
0 / 0 ’ ’
T U
Pin name
M
S P
K V
S
( / %
J F
B E
O U
H
7 " % +
J G
F
7 $ $
J O
H
D P
B H
’ #
7 4
J O
Q M
* /
O F
D I
M U
O T
G J
B N
S
J U
T F
G P
W P
F
T X
P E
S
F
Low-voltage
malfunction
prevention circuit
S P
B O
B H
F
M Z
M Z
G
B H
F S
P G
M U
F
Q Q
Q Q
M U
P E
W P
T V
E J
T V
P O
W P
D L
F M
V U
C B
U F
V U
Drive circuit
S
U
I F
X F
Q V U
Q V
U Q
N P
U Q
F E
Z X
0 V
( S P V O E
1 P
0 V U
* O
3 F
0 V
’ F
’ M
STK740-441
PWM
TR1
Description
Snubber circuit
On/off circuit
Soft start circuit
Short protection circuit
Error amplifier
Phase
compensation
D1
10
9
8
3
4
7
2
1
OUT
F
A
V
ON/OFF
V
B
S
ADJ
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