MB3759 Datasheet, PDF (8/27 Pages) Fujitsu Component Limited. – Switching Regulator Controller (Switchable between push-pull and single-end functions)

MB3759
s TYPICAL CHARACTERISTICS
Reference voltage vs.
power supply voltage
6
IO = 1 mA
5
VREF
4
5
∆VREF
3
0
2
−5
1
0
0
10
20
30
40
Power supply voltage VCC (V)
Oscillator vs. RT, CT
1M
500 k
200 k
100 k
50 k
20 k
10 k
5k
2k
1k
VCC =15 V
CT = 470 pF
1000 pF
0.01µF
0.1µF
2 k 5 k 10 k 20 k 100 k 200 k 500 k
RT (Ω)
Reference voltages. temperature
10
VCC = 15 V
IO = 1 mA
0
−10
−20
−30
−25
0
25
50
75
100
Temperature Ta (°C)
Duty ratio vs. dead time control voltage
0
VCC = 15 V
CT = 1000 pF
Ta = 0°C
RT = 30 kΩ Ta = +25°C
10
Ta = +70°C
20
30
40
50
0
1
2
3
Dead time control voltage VD (V)
(Continued)
8