FA5528 데이터 시트보기 (PDF) - Fuji Electric
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FA5528 Datasheet PDF : 33 Pages
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FA5526/5527/5528/5536/5537/5538
Current sensor (IS pin)
Item
Symbol Condition
MIN
TYP
MAX
Unit
Voltage gain
AvIS
⊿VFB/⊿VIS
3.8
4.0
4.2
V/V
Maximum threshold voltage VthIS1 FB pin = 4V, duty = 10% 470
520
570
mV
FA5526/36
-24
Slope compensation value SLP
FB pin=4V FA5527/37
-17
mV/us
FA5528/38
-12
FB pin=3V FA5526/36
0.3
Minimum ON pulse width Tmin
CS pin=0V FA5527/37
0.5
us
IS pin=1V FA5528/38
0.7
FA5526/36
0.2
Blanking time
Tblank
FA5527/37
0.4
us
FA5528/38
0.6
Output delay time
TpdIS
IS pin to OUT pin
100
ns
Soft-start circuit (CS pin)
Item
Symbol Condition
MIN
Charging current
ICS0
CS pin = 0V
-15
Threshold voltage for
changing charging current
Input threshold voltage
VTHCS1
VTHCS0
Ics = -12 -4µA
OUT pin width = Tmin,
FB pin = 3V
TYP
-11
3
0.68
MAX
Unit
-5
uA
V
V
Over Current Protection circuit (CS pin) : Latch OFF for FA5526/27/28 and Auto-Recovery for FA5536/37/38
Item
Charging current
Sink current
Symbol
ICS4
Isink
Condition
CS pin = 4V
CS pin = 6V
MIN
TYP
MAX
Unit
-6
-4
-2
uA
34
59
84
uA
Cutoff threshold voltage
VTHCSF
VTHCSN
ON→OFF
OFF→ON
8.0
8.5
9.0
V
7.4
7.9
8.4
V
Hysteresis width
VTHHYS VTHCSF - VTHCSN
0.6
V
Clamp voltage at latch mode VCS2
FB pin : open
8.9
V
Cutoff circuit at overload (FB pin)
Item
Detection threshold voltage
Symbol
VTHFB
Condition
MIN
TYP
MAX
Unit
3.3
3.6
3.9
V
Cutoff circuit at overvoltage (VCC pin)
Item
Threshold voltage
CS pin charging current
Symbol
VTHVCC
ISOCS2
Condition
CS pin = 4V
MIN
TYP
MAX
Unit
26
28
30
V
-1.3
mA
Fuji Electric Co., Ltd.
AN-087E Rev.1.0
April-2011
8
http://www.fujielectric.co.jp/products/semiconductor/
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