MB3871 Datasheet, PDF (11/25 Pages) Fujitsu Component Limited. – Mobile Pentium II DC/DC Converter IC

MB3871
s TYPICAL CHARACTERISTICS
Power supply current vs.
Power supply voltage characteristics
5.0
Ta = +25°C
VB = 5 V
4.0
3.0
2.0
1.0
0
0
5.0 10.0 15.0 20.0 25.0
Power supply voltage VCC (V)
Reference voltage vs. Power supply voltage characteristics
5.0
4.0
3.0
2.0
1.0
0
0
4.0
8.0
12.0 16.0 20.0
Power supply voltage VCC (V)
VREF vs. Temperature characteristics
3.60
VCC = 5 V, VB = 5 V, RT = 130 kΩ
3.55
3.50
3.45
Reference voltage, CTL pin current vs. Control voltage
5.0
Ta = +25°C 500.0
VB = 5 V
VREF
4.0
400.0
3.0
300.0
ICTL
2.0
200.0
3.40
–40.0 –20.0 0.0 20.0 40.0 60.0 80.0 100.0
Temperature Ta (°C)
1.0
0
0
5.0
10.0 15.0 20.0
Control voltage VCTL (V)
100.0
0
25.0
ERR threshold (3.5 V setting) vs.
Temperature characteristics
3.60
VCC = 5 V, VB = 5 V, RT = 130 kΩ
3.55
3.50
3.45
3.40
–40.0 –20.0 0.0 20.0 40.0 60.0 80.0 100.0
Temperature Ta (°C)
ERR threshold (2.0 V setting) vs.
Temperature characteristics
2.04
2.02
VCC = 5 V, VB = 5 V, RT = 130 kΩ
2.00
1.98
196
1.94
–40.0 –20.0 0.0 20.0 40.0 60.0 80.0 100.0
Temperature Ta (°C)
(Continued)
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