MB3887_06 Datasheet, PDF (28/34 Pages) Fujitsu Component Limited. – DC/DC Converter IC for Charging Li-ion battery

MB3887
Switching waveform constant voltage mode
(set at 12.6 V)
VBATT (mV)
100
Ta = +25 °C
VIN = 19 V
BATT = 1.5 A
0
−100
VD (V)
15
10
5
0
98 mVp-p VBATT
VD
Switching waveform constant current mode
(set at 12.6 V, with 10 V)
VBATT (mV) Ta = +25 °C
100
VIN = 19 V
BATT = 3.0 A
0
−100
VD (V)
15
10
5
0
98 mVp-p _VBATT
VD
0 1 2 3 4 5 6 7 8 9 10
(µs)
Switching waveform constant voltage mode
(set at 16.8 V)
VBATT (mV)
Ta = +25 °C
VIN = 19 V
100
BATT = 1.5 A
0
−100
VD (V)
15
10
5
0
58 mVp-p
VBATT
VD
0 1 2 3 4 5 6 7 8 9 10
(µs)
Switching waveform constant current mode
(set at 16.8 V, with 10 V)
VBATT (mV)
Ta = +25 °C
VIN = 19 V
100
BATT = 3.0 A
0
−100
VD (V)
15
10
5
0
96 mVp-p _VBATT
VD
0 1 2 3 4 5 6 7 8 9 10
(µs)
0 1 2 3 4 5 6 7 8 9 10
(µs)
(Continued)
28