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FA5531 Datasheet Preview

FA5531 Datasheet

(FA5530 - FA5532) Quasi-Resonant IC

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FA5531 pdf
Quasi-Resonant IC FA5530/31/32
FFeeaattuurreess
FFAA55553311BBlloocckkDDiiaaggrraamm
• Internal start-up circuit with 500V rating and low
frequency operation achieves 140mW input at no load.
Small Output Capacitance : Linearly reduced
ZCD
frequency for lighter load causes small ripple voltage.
•Suitable for Low Noise and High Efficiency about 90%
•Line-up of 3 types for maximum frequency and OLP
5530: 65kHz max.,16Vmax.-VCC,Auto-restart OLP
5531:130kHz max.,28Vmax.-VCC,Auto-restart OLP
IS
5532:130kHz max.,28Vmax.-VCC,Timer-Latched OLP
•High ability of driving Power MOSFET ( High / Low FB
side : 17 ohm / 3.5 ohm ) : available to 200W output
•Vcc rating 28V allows no series regulator for
auxiliary winding to clamp Vcc voltage for FA5531/32.
•1ms Fixed Soft Start time
•Timer Latched Over-Voltage Protection of 16V/28V Vcc
•8 pins package ( DIP/SO )
Usage : Notebook PC, LCD Monitor, LCD-TV etc.
Valley
detection
Time out
(5µs)
5V Reset
50uA
Max. fsw
Blanking
Variable
max.130kHz
5V
1 shot
(380ns)
CLR
Start up
management
Logic
Start up
Current
VH
VCC
5V Reg.
Check
5V Reg.
UVLO
Internal
supply
9.85V/9.1V
20kΩ
125k
Current
comparator
SQ
R
Driver
OUT
125k 1V
Disable
Soft start
(1ms)
0.4V
Overload
3.3V
Timer
190ms
1510ms
Reset
ZCD
OVP 2
8V
VCC
OVP 1
28V
Timer
latch
(48µs)
GND



FE
FE

FA5531 Datasheet Preview

FA5531 Datasheet

(FA5530 - FA5532) Quasi-Resonant IC

No Preview Available !

FA5531 pdf
Quasi-Resonant IC FA5530/31/32
AApppplliiccaattiioonnCCiirrccuuiitt
Bead 4700pF
80 to
264Vac
0.22μF 470pF 7mH
1M
1M
250V/3A 470pF
FG
100 ohm
1000pF
~+
~ー
D3SBA60
E RA15-01
7.5k
2200pF
T1
220μF
400V
56k
E R A38-06
2200pF
YG865C15R * 2
19V /0 to 5A
3300μF * 3
35V
( 9900μF )
4.7μH
1000μF
35V
10 ohm
2SK3687
4.7k
Cd
220pF
Lp = 3 6 0 μH
Np:Ns:Nsub=57:10:12
0.22 ohm
0.022μF
2k
200k
0.1μF GND
10k
2200pF
18k
100k
S C 9 0 2 -2
18
27
36
45
FA5531
33μF
50V
4.7 ohm E R A22-02
N a tio n a l
S e m icon d u ctor
LMV431
10k 0.01μF
15k


Part Number FA5531
Description (FA5530 - FA5532) Quasi-Resonant IC
Maker FE
Total Page 4 Pages
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