MAX1508 Datasheet, PDF (3/11 Pages) Maxim Integrated Products – Linear Li Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOKin 3mm x 3mm TDFN

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