®
ACT8938
Rev 3, 23-Dec-11
TYPICAL PERFORMANCE CHARACTERISTICS CONT’D
(TA = 25°C, unless otherwise specified.)
VSYS Voltage vs. CHGIN Voltage
VSYS Voltage vs. VSYS Current
6.0
5.0
4.0
3.0
2.0
1.0
0
5.2
5.0
4.8
4.6
4.4
4.2
4.0
ACIN/CHGLEV = 01
ACIN/CHGLEV = 11
VVSYS = 4.6V
0
2
4
6
8
10
0
500
1000
1500
2000
2500
CHGIN Voltage (V)
VSYS Current (mA)
Charger Current vs. Battery Voltage
Charger Current vs. Battery Voltage
500
450
400
350
300
250
200
150
100
50
100
90
80
70
60
50
40
30
20
10
0
VCHGIN = 5V
ACIN = 0
CHGLEV = 1
450mA USB
VBAT Falling
VBAT Rising
VCHGIN = 5V
ACIN = 0
VBAT Falling
CHGLEV = 0
VBAT Rising
90mA USB
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
Battery Voltage (V)
Battery Voltage (V)
Charger Current vs. Battery Voltage
DCCC and Battery Supplement Modes
1200
1000
800
600
400
200
0
RISET = 2.4kꢀ
VCHGIN = 5V
CH4
CH3
CH2
ACIN/CHGLEV = 11
VBAT = 3.5V
VVSYS = 4.6V
VSYS = 0-1.8A
ICHARGE = 1000mA
CHGIN = 5.1V-3A
I
VBAT Falling
VBAT Rising
CH1
V
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
CH1: IVSYS, 1.00A/div
CH2: IBAT, 1.00A/div
CH3: VBAT, 1.00V/div
CH4: VVSYS, 1V/div
TIME: 200ms/div
Battery Voltage (V)
Innovative PowerTM
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