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FA3647 Datasheet(PDF) 4 Page - Fuji Electric

Part No. FA3647
Description  PWM control IC with light load power saving function For Switching Power Supply Control
Download  21 Pages
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Maker  FUJI [Fuji Electric]
Homepage  http://www.fujielectric.co.jp/eng/fdt/scd
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FA3647 Datasheet(HTML) 4 Page - Fuji Electric

 
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FA3641P(N), FA3647P(N)
61
Output ON/OFF circuit section
Item
Symbol
Test condition
Min.
Typ.
Max.
Unit
CS pinl source current
Isocs
VCS=0V, Tj=25˚C
–4.0
–6.5
–9.0
µA
OFF-to-ON threshold voltage (CS pin)
VTH ON
OFF
→ON, Tj=25˚C
0.82
0.95
V
ON-to-OFF threshold voltage (CS pin)
VTH OFF
ON
→OFF, Tj=25˚C
0.50
0.68
V
Latch-mode cutoff circuit section
Item
Symbol
Test condition
Min.
Typ.
Max.
Unit
CS pin sink current
ISICS
VCS=6.5V, VFB=1V, Tj=25˚C20
35
50
µA
Cutoff threshold voltage (CS pin)
VTH CSF
ON
→OFF, Tj=25˚C
8.0
8.5
9.0
V
VTH CSN
OFF
→ON, Tj=25˚C
7.4
7.9
8.4
V
Hysteresis
VTH HIS
0.6
V
Overload cutoff circuit section
Item
Symbol
Test condition
Min.
Typ.
Max.
Unit
Cutoff threshold voltage (FB pin)
VTH FB
2.8
3.0
3.3
V
Overvoltage cutoff circuit section
Item
Symbol
Test condition
Min.
Typ.
Max.
Unit
Cutoff threshold voltage (Vcc pin)
VTH VCC
Tj=25˚C
3032
34V
Cutoff operating supply current (Vcc pin)
I VCC
Tj=25˚C13
mA
Charge current (CS pin)
ISO CS2
VCS=6.5V
–0.5
–0.9
–1.4
mA
Undervoltage lockout circuit section
Item
Symbol
Test condition
Min.
Typ.
Max.
Unit
OFF-to-ON threshold voltage
VCC ON
Tj=25˚C
15.5
16.5
17.5
V
ON-to-OFF threshold voltage
VCC OFF
Tj=25˚C
8.5
9.0
10.0
V
Hysteresis
VHYS
Tj=25˚C
6.8
7.5
8.2
V
Output section
Item
Symbol
Test condition
Min.
Typ.
Max.
Unit
L-level output Voltage
VOL
IO=100mA
0.7
1.5
V
H-level output Voltage
VOH
IO= –100mA, VCC=18V
15
16.5
V
Rise time
tr
OUT=1000pF
50
ns
Fall time
tf
OUT=1000pF
40
ns
Overall device
Item
Symbol
Test condition
Min.
Typ.
Max.
Unit
Standby current
ICC STB
VCC=14V
2
µA
Startup current
ICC ST
VCC=VCCON
12
30
µA
Operating-state supply current
ICC OP
No load
1.9
2.5
mA
OFF-state supply current
ICCOF
VCC=17V, Cs=0V
100
µA
Cutoff-state supply current
ICCL
VCC=10V
45
100
µA


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