MB3785A Datasheet, PDF (11/29 Pages) Fujitsu Component Limited. – Switching Regulator Controller (4 Channels plus High-Precision, High-Frequency Capabilities)

MB3785A
s TYPICAL CHARACTERISTIC CURVES
1. Supply current vs. Supply voltage
10
Ta = +25°C
8
CTL1 = 6 V
6
CTL1, 2 = 6 V,
4
CTL1, 2, 3 = 6 V
2
0
0
4
8
12
16
20
Supply voltage VCC (V)
3. Reference voltage and Output current setting
pin voltage vs. Supply voltage
5
Ta = +25°C 5
4
4
VREF
3
3
2
VE
2
1
1
0
1
2
3
4
5
Supply voltage VCC (V)
5. Reference voltage vs. Control voltage
3.0
VCC = 6 V
Ta = +25°C
2.8
2.6
2.4
2.2
2.0
0
1
2
3
4
5
Control voltage VCTL1 (V)
2. Reference voltage vs. Supply voltage
5
Ta = +25°C
4
3
2
1
0
0
4
8
12
16
20
Supply voltage VCC (V)
4. Reference voltage vs. Ambient temperature
2.56
2.54
2.52
VCC = 6 V
VCTL1, 2,3 = 6 V
IOR = –1 mA
2.50
2.48
2.46
2.44
–60 –40 –20 0 20 40 60 80 100
Ambient temperature Ta (°C)
6. Control current vs. Control voltage
500
VCC = 6 V
Ta = +25°C
400
300
200
100
0
0
4
8
12
16
20
Control voltage VCTL1 (V)
(Continued)
11