Fujitsu MB3891 Datasheet page 15

Power management ic for gsm mobile phone
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Output voltage falling waveforms (LDO1)
4
3
2
1
0
0
50 100 150 200 250 300 350 400 450 500
t (ms)
Output voltage rising waveforms (LDO1)
4
2
0
0
20 40 60 80 100 120 140 160 180 200
t ( s)
Waveform at rapid change of output load
(LDO1)
2.0
1.5
1.0
0.5
0.0
OUT1 0 A
0
10 20 30 40 50 60 70 80 90 100
t ( s)
Ta
25 C
OUT1 No load
CONT1
"L"
CONT6 OPEN
VBAT
2
1
OUT1
0
10
CONT1
OUT1
2
1
Ta
25 C
0
VBAT 3.6 V
OUT1 18
CONT6 OPEN
[Measurement diagram]
OUT1
Ta
25 C
VBAT 3.6 V
VREF 1.225 V
CONT1
"L"
(IC internal)
CONT6 OPEN
2
1
V
C
0
120 mA
Output voltage falling waveforms (LDO1)
4
2
VBAT
0
OUT1
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
t (s)
Output voltage falling waveforms (LDO1)
CONT1
5
0
OUT1
0
20 40 60 80 100 120 140 160 180 200
t (ms)
VBAT 3.6 V
LDO1
OUT1
MB3891
Ta
25 C
VBAT 1 F
OUT1 No load
CONT1
"L"
CONT6 OPEN
2
1
0
Ta
25 C
VBAT 3.6 V
2.0
OUT1 No load
CONT6 OPEN
1.5
1.0
0.5
0.0
120 mA
1 F
V
C
4 V
0 V
(Continued)
15

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