MB3888 Datasheet, PDF (27/30 Pages) Fujitsu Component Limited. – DC/DC Converter IC for Charging Li-ion Battery

MB3888
(Continued)
Soft-start operating waveform constant voltage
mode (set at 16.8 V)
Discharge operating waveform constant voltage
mode (set at 16.8 V)
VBATT (V)
20
10
Ta = +25 °C
VIN = 19 V
BATT = 12 Ω
0
VCS (V)
4
2
ts = 9.6 ms
VBATT
VCS
IIN (A)
2
0
IIN
VCTL (V)
5
1
0
VCTL
0
0 2 4 6 8 10 12 14 16 18 20
(ms)
VBATT (V)
20
10
0
VCS (V)
4
2
0
IIN
VCTL (V)
5
0
VCTL
VBATT
IIN (A)
2
VCS
1
0
Ta = +25 °C
VIN = 19 V
BATT = 12 Ω
0 2 4 6 8 10 12 14 16 18 20
(ms)
Soft-start operating waveform constant current
mode (set at 16.8 V)
VBATT (V)
20
10
Ta = +25 °C
VIN = 19 V
BATT = 4 Ω
0
VCS (V)
4
2
0
IIN
VCTL (V)
5
ts = 9.6 ms
VBATT
VCS
VCTL
IIN (A)
2
1
0
0
0 2 4 6 8 10 12 14 16 18 20
(ms)
Discharge operating waveform constant current
mode (set at 16.8 V)
VBATT (V)
20
10
0
VCS (V)
4
2
IIN
0
VBATT
IIN (A)
2
VCS
1
VCTL (V)
5
0
VCTL
0
Ta = +25 °C
VIN = 19 V
BATT = 4 Ω
0 2 4 6 8 10 12 14 16 18 20
(ms)
27