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MAX1508 Datasheet(PDF) 3 Page - Maxim Integrated Products

Part No. MAX1508
Description  Linear Li Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOKin 3mm x 3mm TDFN
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX1508 Datasheet(HTML) 3 Page - Maxim Integrated Products

 
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Linear Li+ Battery Charger with Integrated Pass FET,
Thermal Regulation, and ACOK in 3mm x 3mm TDFN
_______________________________________________________________________________________
3
Note 1: Limits are 100% production tested at TA = +25
°C. Limits over operating temperature range are guaranteed through correla-
tion using statistical quality control (SQC) methods.
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 5V, VBATT = 4.0V, ACOK = EN = CHG = unconnected (for the MAX1508 and MAX1508Z), EN = VL (for the MAX1508Y,) RISET
= 2.8k
Ω to GND, CVL = 0.47µF, BATT bypassed to GND with 1µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
BATT Removal Detection-Threshold Hysteresis
200
mV
Minimum BATT Bypass Capacitance
1
µF/A
Fast-Charge Current-Loop System Accuracy
VBATT = 3.5V
478
520
562
mA
Precharge Current System Accuracy
Percentage of the fast-charge current,
VBATT = 2.2V (MAX1508 only)
510
15%
Die-Temperature-Regulation Set Point
100
°C
VBATT Precharge Threshold Voltage
VBATT rising (MAX1508 only)
2.3
2.5
2.7
V
Current-Sense Amplifier Gain, ISET to IBATT in
Fast-Charge Mode
IBATT = 500mA, VISET = 1.4V
0.880
0.958
1.035
mA/A
Regulator Dropout Voltage (VIN - VBATT )VBATT = 4.1V, IBATT = 425mA
130
200
mV
EN or EN Logic Input Low Voltage
4.25V < VIN < 6.5V
0.52
V
EN or EN Logic Input High Voltage
4.25V < VIN < 6.5V
1.3
V
EN or EN Internal Pulldown Resistor
(MAX1508 and MAX1508Z only)
100
200
400
k
CHG Output Low Current
V CHG = 1V
5
12
20
mA
TA = +25°C1
CHG Output High Leakage Current
V CHG = 13V
TA = +85°C
0.002
µA
ACOK Output Low Voltage
IACOK = 0.5mA
0.4
V
TA = +25°C1
ACOK Output High Leakage Current
VACOK = 5.5V
TA = +85°C
0.002
µA
Full-Battery Detection Current Threshold
(as a Percentage of the Fast-Charge Current)
IBATT falling
5
10
15
%


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