MAX1679 データシートの表示（PDF） - Maxim Integrated

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MAX1679

Single-Cell Li+ Battery Charger for Current-Limited Supply

Maxim Integrated 

Single-Cell Li+ Battery Charger

for Current-Limited Supply

ELECTRICAL CHARACTERISTICS (continued)

(VIN = V CHG = +10V, VBATT = +4.2V, TSEL = GND, GATE = unconnected, ADJ = unconnected, THERM = 10kΩ to GND, TA = -40°C

to +85°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

MAX UNITS

IN Input Current, Done State

Timer Accuracy

CHG Output Leakage Current

CHG Output Sink Current

IIN

VBATT = 4.25V, VIN = 22V

See Table 3

V CHG = 22V, CHG = high

V CHG = 1.0V, CHG = low

700

µA

-15

+15

%

-1

+1

µA

4

6

mA

THERM Sense Current (for hot

qualification)

342

363

µA

THERM Sense Current (for cold

qualification)

47.3

50.3

µA

THERM Sense Voltage Trip

Point

GATE Source/Sink Current

GATE Drive Current at Battery

Removal

VIN = 10V, VGATE = 8V

VBATT = 5.1V, gate driven high

1.358

60

20

1.442

V

140

µA

90

mA

Note 1: The input voltage range is specified with the external PFET off. When charging, the PFET turns on and the input voltage

(the output voltage of the constant-current power source) drops to very near the battery voltage. When the PFET is on, VIN

may be as low as 2.5V.

Note 2: BATT Input Current is the supply current to the device. When VIN is removed, the MAX1679 shuts down and the input current

is less than 1µA, even if there is an external RADJ resistor (ADJ to GND).

4 _______________________________________________________________________________________

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