FA3675F Datasheet, PDF (6/8 Pages) Fuji Electric – For Switching Power Supply Control

s Characteristic curves (Ta = 25°C)
Oscillation frequency (fOSC) vs.
timing resistor resistance (RT)
1000
C_T=29pF
56pF
100
100pF
500pF
10
10
100
RT [kΩ]
Output duty cycle vs. CS terminal voltage (VCS)
100
90
80
70
60
50
40
30
20
10
0
0
0.2 0.4 0.6 0.8 1
Vcs [V]
1.2 1.4 1.6
Reference voltage (VREF) vs ambient temperatare (Ta)
1.06
1.04
1.02
1
0.98
0.96
20
0
20
40
60
80
100
Ta [°C]
FA3675F
Oscillation frequency (fOSC) vs.
ambient temperature (Ta)
520
500
480
460
440
420
400
20
0
20
40
60
80
100
Ta [°C]
Output duty cycle vs. FB terminal voltage (VFB)
100
90
80
70
60
50
40
30
20
10
0
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
VFB [V]
Supply current (Icc) vs supply voltage (Vcc)
CT=100pF, RT=10kΩ
10
9
8
7
6
Duty ^{cycle 60%}
5
4
Duty cycle 0%
3
Duty cycle 100%
2
1
0
0
5
10
15
20
Vcc [V]
127