LTC4008_15 Datasheet, PDF (6/24 Pages) Linear Technology – 4A, High Effi ciency, Multi-Chemistry Battery Charger

LTC4008
TYPICAL PERFORMANCE CHARACTERISTICS (T_A = 25°C unless otherwise noted)
Battery Leakage Current vs
Battery Voltage
40
VDCIN = 0V
35
30
25
20
15
10
5
0
0
5 10 15 20 25 30
BATTERY VOLTAGE (V)
4008 G07
Efficiency at 12.6V with 15VDC V_IN
100
95
90
85
80
75
0.50
1.00 1.50 2.00 2.50 3.00
CHARGE CURRENT (A)
4008 G10
Efficiency at 19VDC V_IN
100
16.8V
95
12.6V
90
85
80
75
0.50
1.00 1.50 2.00 2.50 3.00
CHARGE CURRENT (A)
4008 G09
Charging Voltage Error
TEMP = 27°C, I_LOAD = 0.120A
0.150
0.125
0.100
0.075
0.050
DCIN = 20V
0.025
DCIN = 15V
0
–0.025
–0.050
–0.075
–0.100
–0.125
–0.150
0 2 4 6 8 10 12 14 16 18 20 22
CHARGING VOLTAGE (V)
4008 G11
4008fb
6