FSQ0465RB View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
MFG CO.
FSQ0465RB
Fairchild Semiconductor
'FSQ0465RB' PDF : 24 Pages View PDF
Typical Application Circuit
Application
LCD Monitor
Power Supply
FPS™ Device
FSQ0465RS
Input Voltage
Range
85-265VAC
Rated Output Power
40W
Output Voltage
(Maximum Current)
5.0V (2.0A)
13V (2.3A)
Features
! Average efficiency of 25%, 50%, 75%, and 100% load conditions is higher than 80% at universal input
! Low standby mode power consumption (<1W at 230VAC input and 0.5W load)
! Reduce EMI noise through valley switching operation
! Enhanced system reliability through various protection functions
! Internal soft-start (17.5ms)
Key Design Notes
! The delay time for overload protection is designed to be about 23ms with C105 of 33nF. If faster/slower triggering of
OLP is required, C105 can be changed to a smaller/larger value (e.g. 100nF for 70ms).
! The input voltage of VSync must be between 4.7V and 8V just after MOSFET turn-off to guarantee hybrid control and
to avoid OVP triggering during normal operation.
! The SMD-type 100nF capacitor must be placed as close as possible to VCC pin to avoid malfunction by abrupt pul-
sating noises and to improve surge immunity.
1. Schematic
FSQ0465 Rev.00
2
BD101
2KBP06M3N25
7
1
4
C102
150nF
275VAC
LF101
34mH
R102
68kΩ
C103
100μF
400V
3
C105
33nF
100V
R103
33kΩ
1W
C104
4.7nF
630V
R104
5.6Ω
0.5W
D101
1N 4007
FSQ0465R
6
Vstr
Drain 1
5
Sync
R105 C106 C107
100Ω 100nF 47μF
Vcc 0.5W SMD 50V
4 Vfb
3
GND
D102
2
UF 4004 R107
18kΩ
ZD101
1N4745A
R108
12kΩ
R101
2MΩ
1W
RT1
5D-9
C101
150nF
275VAC
F1
FUSE
250V
2A
Optional components
T1
EER3016
D201
MBRF10H100
1
10
C201
1000μF
2
8 25V
3
L201
5μH
C202
1000μF
25V
13V,
2.3A
D202
MBRF1060
4
7
C203
1000μF
6 10V
5
C301
4.7nF
1kV
L202
5μH
C204
1000μF
10V
5V, 2A
R201
1kΩ
IC301
FOD817A
R202
1.2kΩ
IC201
KA431
R203
10kΩ
C205
47nF
R204
4kΩ
R205
4kΩ
Figure 37. Demo Circuit of FSQ0465RS
© 2008 Fairchild Semiconductor Corporation
FSQ0465RS/RB Rev. 1.0.1
18
www.fairchildsemi.com
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