MB3891 Datasheet, PDF (14/29 Pages) Fujitsu Component Limited. – Power Management IC for GSM Mobile Phone

MB3891
Ripple rejection vs. frequency (LDO1)
0
−20
−40
−60
−80
−100
10
Ta = +25 °C
VBAT = 3.6 V
OUT1 = 1 µF
OUT1 = 18 Ω
CONT1 = “L”
CONT6 = OPEN
100
1k
10 k 100 k 1 M
Frequency f (Hz)
Ripple rejection vs. frequency (LDO1)
0
Ta = +25 °C
VBAT = 3.6 V
−20 _{OUT1 = 1 µF}
CONT1 = “L”
−40 ^{CONT6 = OPEN}
−60
−80
−100
10
100
1k
10 k 100 k 1 M
Frequency f (Hz)
Dropout voltage vs. load current (LDO1)
0.6 _{VBAT = 2.1 V}
0.5
CONT1 = OPEN
CONT6 = “H”
0.4
Ta = +85 °C
0.3
Ta = −20 °C
0.2
Ta = +25 °C
0.1
0.0
0
−50
−100
−150
Load current ILOAD (mA)
−200
Output voltage vs. ambient temperature (LDO1)
2.13
2.12
VBAT = 3.6 V
CONT1 = OPEN
CONT6 = “H”
2.11
2.10
2.09
2.08
−40 −20 0
20 40 60 80 100
Ambient temperature Ta ( °C)
Output voltage rising waveforms (LDO1)
10
5
VBAT
0
OUT1
2.0
1.5
1.0
Ta = +25°C
OUT1 = 18 Ω
0.5
CONT1 = “L”
CONT6 = OPEN
0.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
t (ms)
14