LP3918

SNVS476D – AUGUST 2007 – REVISED MAY 2013

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Charger Electrical Characteristics (continued)

Unless otherwise noted, VCHG-IN = 5V, VIN ( = VIN1 = VIN2 = BATT) = 3.6V.CCHG_IN = 10µF, CBATT = 30µF. Charger set to

default settings unless otherwise noted. Typical values and limits appearing in normal type apply for TJ = 25°C. Limits

appearing in boldface type apply over the entire junction temperature range for operation, Ta = TJ = −25°C to +85°C.

(1)(2)

Limit

Symbol

Parameter

Condition

Typ

Units

Min

Max

Detection and Timing(5)

TPOK

Power OK deglitch

VBATT < (VCC - VOK_CHG)

32

mS

time

TPQ_FULL

Deglitch time

Pre-qualification to full-rate charge

230

mS

transition

TCHG

Charge timer

Precharge mode

1

Hrs

Full Rate Charging Timeout

5

Constant Voltage Timeout

5

TEOC

Deglitch time for

230

mS

end-of-charge

transition

(5)

Specified by design. Not production tested.

12

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