ACT8740
Rev PrB, 25-Feb-08
SINGLE-CELL Li+ BATTERY CHARGER (CHGR)
ELECTRICAL CHARACTERISTICS
(VVIN = 5V, VBAT = 3.6V, ISET1[ ] = [0000], TA = 25°C, unless otherwise specified.)
PARAMETER
VIN Operating Voltage Range
VIN UVLO Threshold
VIN UVLO Hysteresis
On-Resistance
TEST CONDITIONS
MIN
4.3
TYP MAX UNIT
6
V
V
VIN Voltage Rising
3.75
4
4.25
VIN Voltage Falling
500
300
mV
mꢀ
V
500
TA = 25°C
4.179 4.200 4.221
Battery Termination Voltage
V
VIN = 4.5V to 5.5V, TA = 0°C to 85°C
VIN = 4.5V to 5.5V, IBAT = 10mA
4.158 4.200 4.242
V
Line Regulation
Load Regulation
V
0.2
%/V
%/mA
mA
mA
mA
V
I
BAT = 50mA to 500mA
0.001
VBAT = 4V, CHGLEV = GA
90
450
45
100
500
60
Charge Current
V
V
V
V
BAT = 4V, CHGLEV = VSYS
BAT = 2.7V, CHGLEV = GA or VSYS
BAT Voltage Rising
400
30
Precondition Charge Current
Precondition Threshold Voltage
Precondition Threshold Hysteresis
End-of-Charge Current Threshold
End-of-Charge Delay
2.75
2.9
150
38
3.05
BAT Voltage Falling
mV
mA
min
mV
°C
VBAT = 4.2V, CHGLEV = VSYS
20
56
4
Charge Restart Threshold
VSET[ ] - VBAT, VBAT Falling
200
110
0.4
50
Thermal Regulation Threshold
BAT Reverse Leakage Current
V
BAT = 4.2V, VIN = GA or BAT
VIN < UVLO Voltage
2
µA
V
µA
SLEEP, SUSPEND or TIMEOUT-FAULT
state
200
700
µA
µA
VIN Supply Current
PRECONDITION, FAST-CHARGE, or
TOP-OFF state
Precondition Timeout Period
Total Timeout Period
TIMOSET[ ] = [10]
TIMOSET[ ] = [10]
90
4
min
hr
CHGLEV Logic High Input Voltage
CHGLEV Tri-state Current Thresholdc
CHGLEV Logic Low Input Voltage
I
CHGLEV ≥ 15µA
1.4
-2
V
2
µA
V
ICHGLEV ≤ -15µA
0.4
c: Charger is suspended when CHGLEV pin current is within this range
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