FA7700V Datasheet, PDF (5/13 Pages) List of Unclassifed Manufacturers – For Switching Power Supply Control

s Characteristic curves
Oscillation frequency (fOSC) vs.
timing resistor resistance (RT)
10000
1000
100
10
1
10
100
Timing resisitor RT [kΩ]
Duty cycle vs. FB terminal voltage
FA7700
100
90
80
70
60
fosc=1MHz
50
40
30
fosc=185kHz
20
10
0
0.5
0.7
0.9
1.1
1.3
FB terminal voltage [V]
Duty cycle vs. FB terminal voltage
FA7701
100
90
80
70
fosc=1MHz
60
50
40
30
20
fosc=185kHz
10
0
0.5
0.7
0.9
1.1
1.3
FB terminal voltage [V]
FA7700V, FA7701V
Oscillation frequency (fOSC) vs. ambient temperature
5
4
3
2
fosc=1MHz
1
0
–1
fosc=50kHz
–2
fosc=185kHz
–3
–4
–5
–40 –20
0
20 40 60 80 100
Ambient temperature Ta [˚C]
Duty cycle vs. CS terminal voltage
FA7700
100
90
80
70
fosc=1MHz
60
50
40
30
20
fosc=185kHz
10
0
0.5
0.7
0.9
1.1
1.3
CS terminal voltage [V]
Duty cycle vs. CS terminal voltage
FA7701
100
90
80
70
fosc=1MHz
60
50
40
30
20
fosc=185kHz
10
0
0.5
0.7
0.9
1.1
1.3
CS terminal voltage [V]
5