MB3782_1 Datasheet, PDF (19/27 Pages) Fujitsu Component Limited. – ASSP Power Supplies BIPOLAR Switching Regulator Controller

MB3782
Timing resistance vs.oscillator frequency
VCC = 6 V
Ta = +25˚C
1M
100 k
CT = 150 pF
Power supply voltage vs. triangular wave period
100
VCC = 6 V
RT = 15 kΩ
Ta = +25˚C
10
10 k
CT = 15000 pF
CT = 1500 pF
1k
1k
5 k 10 k 50 k 100 k 500 k
Timing resistance RT (_Ω)
Ambient temperature vs.oscillator frequency
10
VCC = 6 V
CT = 330 pF
RT = 15 kΩ
0
Ð 10
- 40
- 20 0 20 40 60 80 100 120
Ambient temperature Ta (˚C)
Control voltage vs.reference voltage
5.0
VCC = 6 V
CT = +25˚C
1
10²
10³
10⁴
10⁵
Timing capacitance CT (pF)
Oscillator frequency vs.duty cycle
100
VCC = 6 V
CT = 1330 pF
80
RT = 15 kΩ
Ta = +25˚C
60
40
20
0
5 k 10 k
50 k 100 k
500 k 1 M
Oscillator frequency (Hz)
Control input current
500
VCC = 6 V
CT = +25˚C
2.5
250
0
0
1
2
3
4
5
Control voltage VCTL (V)
0
0
4
8
12
16
20
Control voltage VCTL (V)
(Continued)
19