FA5538 데이터 시트보기 (PDF) - Fuji Electric
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FA5538 Datasheet PDF : 33 Pages
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FA5526/5527/5528/5536/5537/5538
(2) Recommended operating conditions
Item
Symbol
MIN
TYP
Supply voltage
VCC
10
18
DC Voltage VVH(DC)
80
VH pin voltage AC Line
VVH(AC)
80
Voltage
VH pin series resistor
RVH
2.2
CS pin capacitor
CCS
0.01
VCC pin capacitor
CVCC
10
33
MAX
26
450
288
47
1
Unit
V
V(DC)
V(AC)
k ohm
µF
µF
(3) Electrical characteristics (Vcc=18V, Tj=25℃, unless otherwise specified)
Oscillator (FB pin)
Item
Symbol Condition
MIN
TYP
MAX
Unit
FA5526/36 117
130
143
Oscillating frequency
Fosc
FB=3V
FA5527/37 90
100
110
kHz
FA5528/38 54
60
66
Supply voltage stability
Fdv
Vcc = 10 to 26V
-2
2
%
Temperature stability
FdT
Ta = -30 to 85℃
+0.025
%/℃
FB pin voltage for starting
frequency variation
VfbM
0.95
1.05
1.15
V
⊿f/⊿VFB FA5526/36
310
Frequency reduction ratio kf
at FB pin FA5527/37
240
=0.8V
to 0.9V FA5528/38
140
kHz/V
FA5526/36
1.1
Oscillating frequency
at light load
F06
FB pin
=0.6V
FA5527/37
1.1
kHz
FA5528/38
1.1
Minimum frequency *1
Fmin
0.4
1.1
3.0
kHz
*1 The frequency become much smaller than 1.1kHz when intermittent switching occurs at light load near no load.
Pulse width modulator (FB pin)
Item
Symbol Condition
MIN
TYP
MAX
Unit
Maximum duty cycle
DMAX
FB pin = 3V, CS pin = 3V 76
80
84
%
Minimum duty cycle
DMIN
FB pin = 0V, CS pin = 3V
0
%
FB voltage for pulse stop VTHFB0 Duty cycle = 0%
200
280
360
mV
FB pin current
Ifb0
FB pin = 0V
-620
-520
-420
uA
Fuji Electric Co., Ltd.
AN-087E Rev.1.0
April-2011
7
http://www.fujielectric.co.jp/products/semiconductor/
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