SG6105A Fairchild Semiconductor, SG6105A Datasheet - Page 3

• Manufacturer Part Number: SG6105A
• Description: SG6105A controller is designed for switching-mode power supplies for desktop PCs
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
SG6105A • Rev. 1.0.2
Block Diagram
6
4
1
NVP
OPP
PSON
V33
2
5V
64μA
V
V5
3
Buffer
Buffer
CC
1.4V
V12
3.2V
2.1V
2.4V
7
Protector
Protector
Detector
UVAC
DSD
UV
OV
UV
5
On/Off Delay
Delay
15ms
50ms
16ms
Delay
Delay
7ms
7ms
0.7V
Figure 2. Function Block Diagram
Delay
2ms
2μA
3
V
CC
D
SET
CLR
Q
Q
RI
19
2.5V
V
REF
SS
18
8μA
300ms
Delay
Delay
3ms
17
IN
COMP
16
O.S.C
PG
10
D
S
R
SET
CLR
SET
CLR
GND
Q
Q
Q
Q
15
www.fairchildsemi.com
VCC
VREF1
VREF2
20
FB1
OP1
OP2
FB2
14
13
11
12
9
8