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| LP3918 Datasheet, PDF (12/39 Pages) National Semiconductor (TI) – Battery Charge Management and Regulator Unit | |||
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LP3918
SNVS476D â AUGUST 2007 â REVISED MAY 2013
www.ti.com
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 = â25°C to +85°C. (1)(2)
Symbol
Parameter
Condition
Limit
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
end-of-charge
transition
230
mS
(5) Specified by design. Not production tested.
12
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