ACE4054

Fully integrated constant current/constant voltage

Li-ion battery charger

VER 1.2

5

in Constant

Temperature Mode

Power FET “ON”

Resistance (Between

VCC and BAT)

RON

0.25

Ω

Soft-Start Time

Tss

IBAT=0 to IBAT=100V/RPROG

100

μs

Recharge Comparator

Filter Time

tRECHARGE

VBAT High to Low

0.5

5

20

Ms

Termination

Comparator Filter

Time

tTERM

IBAT Falling Below ICHG/10

400

1000

2500

μs

PROG Pin Pull-Up

Current

IPROG

3

μA

Note :

1.

Supply current includes PROG pin current (approximately 100μA) but does not include any current delivered to the battery

through the BAT pin (approximately 100mA)

2.

ITREM is expressed as a fraction of measured full charge current with indicated PROG resistor

Application Circuit

CHRG

Supply

BAT

Voltage

VCC

PROG

4.2V Li-Ion

ACE4054

Battery

GND

On/Off