MB3789 Просмотр технического описания (PDF) - Fujitsu
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MB3789 Datasheet PDF : 28 Pages
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MB3789
s TYPICAL CHARACTERISTICS
Power supply current vs.
power supply voltage characteristics
2.4
2.0
VCC2 = 6 V
Ta = +25°C
1.6
1.2
0.8
0.4
0
0
4
8
12
16
20
Power supply voltage VCC1 (V)
Reference voltage vs.
power supply voltage characteristics
5.0
VCC2 = 6 V
4.0
IOR = 0 µA
Ta = +25°C
3.0
2.0
1.0
0
0
4
8
12
16
20
Power supply voltage VCC1 (V)
Sawtooth waveform maximum amplitude voltage vs.
timing capacitance characteristics
(With CT/RT oscillation)
1.4
VCC1 = 5 V
1.2
VCC2 = 6 V
RT = 39 kΩ
SYNC = GND
1.0
Ta = +25°C
0.8
0.6
0.4
0.2
0
102
5 × 102 103 5 × 103 104
5 × 104
Timing capacitance CT (pF)
10
Output power supply current vs.
power supply voltage characteristics
500
VCC1 = 5 V
Ta = +25°C
400
300
200
100
0
0
4
8
12
16
20
Power supply voltage VCC2 (V)
Reference voltage vs.
ambient temperature characteristics
2.56
2.54
2.52
VCC1 = 5 V
VCC2 = 6 V
IOR = 0 µA
2.50
2.48
2.46
2.44
−40 −20 0 20 40 60 80 100
Ambient temperature Ta (°C)
500 k
100 k
50 k
Sawtooth wave frequency vs.
timing resistance characteristics
(With CT/RT oscillation)
VCC1 = 5 V
VCC2 = 6 V
SYNC = GND
Ta = +25°C
10 k
5k
1k
500
100
2k
CT = 470 pF
CT = 1500 pF
CT = 4700 pF
CT = 6800 pF
5 k 10 k
50 k 100 k
Timing resistance RT (Ω)
500 k 1 M
(Continued)
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