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STC4054 Datasheet, PDF (7/17 Pages) STMicroelectronics – 800mA Standalone linear Li-Ion Battery charger with thermal regulation
STC4054
Electrical characteristics
Table 4. Electrical characteristics
(VCC = 5V, CI = 1µF, TJ = -40 to 85° unless otherwise specified) (Note 1).
Symbol
Parameter
Test
Min. Typ. Max. Unit
TLIM
Junction temperature in
constant current mode
RON
Power Fet “ON” resistance
(Between VCC and BAT)
tSS
Soft-start time
TRECHARGE
Recharge comparator filter
time Note 4
tTERM
Termination comparator
filter time Note 4
IPROG PROG pin pull-up current
IBAT=0 to IBAT=1000V/RPROG
VBAT High to Low
IBAT Falling Below ICHG/10
120
°C
600
mΩ
100
µs
0.75 2 4.5 ms
400 1000 2500 µs
1
µA
Note: 1 The STC4054 was tested using a battery simulator and an output capacitor value about
4.7µF
2 Supply current includes PROG pin current but not include any current delivered to the
battery through the VBAT pin
3 ITERM is expressed as a fraction of measured full charge current with indicated PROG
resistor
4 Guaranteed by design
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