Data Sheet

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSQ-Series • Rev. 1.1.3 25
FSCQ-Series — Green Mode Fairchild Power Switch (FPS™)
FSCQ0965RT Typical Application Circuit
Application
Output Power
Input Voltage
Output Voltage (Max. Current)
C-TV
102 W
Universal Input
(90–270 V
ac
)
12 V (0.5 A)
18 V (0.5 A)
125 V (0.5 A)
24 V (1.0 A)
Features
 High Efficiency (>83% at 90 V
ac
Input)
 Wider Load Range through the Extended Quasi-Resonant Operation
 Low Standby Mode Power Consumption (<1 W)
 Low Component Count
 Enhanced System Reliability Through Various Protection Functions
 Internal Soft-Start (20 ms)
Key Design Notes
 24 V Output Designed to Drop to 8 V in Standby Mode
C103
10uF
50V
1
3
4
10
T1
EER3540
12V, 0.5A
C204
1000uF
35V
D205
EGP20D
11
LF101
C101
330nF
275VAC
FUSE
250V
3.0A
C102
220uF
400V
RT101
5D-9
BD101
D101
1N4937
R103
5.1Ω
0.25W
6
7
R104
1.5kΩ
0.25W
2 4
5
1
3
GND
Drain
SYNC
FB
Vcc
D103
1N4148
IC101
FSCQ0965RT
C106
47nF
50V
R105
470Ω
0.25W
C105
3.9nF
50V
ZD101
18V
1W
C107
1nF
1kV
BEAD101
D102
1N4937
C210
470pF
1kV
18V, 0.5A
D204
EGP20D
C205
1000uF
35V
13
C209
470pF
1kV
12
125V, 0.5A
D202
EGP30J
C201
100uF
160V
14
C207
470pF
1kV
L201
BEAD
16
C202
47uF
160V
24V, 1.0A
D203
EGP30D
C203
1000uF
35V
17
C208
470pF
1kV
18
OPTO101
FOD817A
R201
1kΩ
0.25W
C206
22nF
50V
C301
2.2nF
Q201
KA431
R203
39kΩ
0.25W
R202
1kΩ
0.25W
R205
220kΩ
0.25W
R204
4.7kΩ
0.25W
VR201
30kΩ
D201
Q202
KSC945
R206
5.1kΩ
0.25W
R207
5.1kΩ
0.25W
SW201
15
R102
150kΩ
0.25W
R101
100kΩ
0.25W
R106
1.5kΩ
1W
C104
10uF
50V
ZD202
5.1V
0.5W
R208
1kΩ
0.25W
Normal
Standby
D104
UF4007
ZD201
Figure 43. FSCQ0965RT Typical Application Circuit Schematic