MB3875 Datasheet, PDF (22/27 Pages) Fujitsu Component Limited. – DC/DC Converter IC for Charging

MB3875/MB3877
(Continued)
Soft start operating waveforms
Vin = 16 V
Load : BATT = 20 Ω
− INE1 = 0 V
BATT (V)
20
15
5V
CTL (V) ¹⁰
20 5
15 0
10
5
0
5V
20 ms
0 40 80 120 160 200
t (ms)
Soft start operating waveforms
Vin = 19 V
Load : BATT = 20 Ω
− INE1 = 0 V
BATT (V)
20
15
5V
CTL (V) ¹⁰
20 5
15 0
10
5
0
5V
0 40
20 ms
80 120 160 200
t (ms)
DC/DC converter switching waveforms
Vin = 16 V
FOSC = 288.8 kHz
Load : BATT = 2A
5V
1 µs
OUT (V)
20
15
10
5
0
−5
0
2
4
6
8
10
t (µs)
DC/DC converter switching waveforms
Vin = 19 V
FOSC = 288.8 kHz
Load : BATT = 2A
5V
1 µs
OUT (V)
20
15
10
5
0
−5
0
2
4
6
8 10
t (µs)
22