FA7703 Datasheet, PDF (11/21 Pages) Fuji Electric – FUJI Power Supply Control IC

FA7703/04
FA7703/7704
94
92
90
88
86
84
82
80
78
-40
Duty cycle vs. Ambient temperature
FA7703/04:OUT1 Nch drive (SEL1=REG)
FA7704:OUT2
DT terminal voltage≈1.05V
fosc=190kHz
fosc=1MHz
-20
0
20
40
60
80
100
Ambient temperature Ta[°C]
Operating mode supply current vs.Supply voltage
Duty=80%,
3.0
IN(-)-FB:shorted
fosc=1MHz
2.5
2.0
fosc=190kHz
1.5
1.0
0.5
0.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Supply voltage Vcc[V]
Operating supply current vs.Ambient temperature
Duty=80%
2.5
RT=22kΩ
2.0
Vcc=6V
1.5
1.0
-40
-20
0
20
40
60
Ambient temperature Ta[°C]
80
100
94
92
90
88
86
84
82
80
78
-40
Duty cycle vs. Ambient temperature
FA7703/04:OUT1 Pch drive (SEL1=GND)
FA7703:OUT2
DT terminal voltage≈1.05V
fosc=190kHz
fosc=1MHz
-20
0
20
40
60
80
100
Ambient temperature Ta[°C]
CS terminal voltage vs.Ambient temperature
FB1,FB2<1.35V
1.33
1.31
1.29
1.27
1.25
1.23
1.21
-40
-20
0
20
40
60
Ambient temperature Ta[°C]
80
100
Fuji Electric Systems Co., Ltd.
AN-057E Rev.1.0
Jun-2010
11
http://www.fujielectric.co.jp/fdt/scd/