MB39A114 Datasheet, PDF (40/54 Pages) Fuji Electric – DC/DC Converter IC for Charging Li-ion Battery

MB39A114
s REFERENCE DATA
Conversion efficiency vs. Charging current (constant voltage mode)
100
98
96
94
92
90
88
86
84
82
80
0.01
Ta = +25 °C
VAC = 19 V
VBATT = 12.6 V setting
η = (VBATT × IBATT) / (VAC × IAC)
VBATT conversion
0.1
1
10
IBATT (A)
Conversion efficiency vs. Charging voltage (constant current mode)
100
98
96
94
92
90
88
86
Ta = +25 °C
VAC = 19 V
84
IBATT = 3 A setting
82
η = (VBATT × IBATT) / (VAC × IAC)
VBATT conversion
80
0
2
4
6
8
10 12 14
VBATT (V)
BATT voltage vs. BATT charging current (12.6 V setting)
18
16 ^{Ta = +25 °C}
VAC = 19 V
14 _{VBATT = 12.6 V setting}
12
10
D.C.C. Mode
8
Dead Battery Mode
6
4
2
D.C.C. Mode : Dynamically-controlled charging
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
IBATT (A)
40
(Continued)