ACE4703

Fully 5A, 3cell Standalone Li-ion Battery Charger

VER 1.2

1

Description

The ACE4703 is a PWM switch-mode lithium ion battery charger controller for 3 cell li-ion battery in a

small package using few external components.

The ACE4703 is specially designed for charging lithium ion batteries with constant current and constant

voltage mode. In constant voltage mode, the regulation voltage is fixed at 12.6V with ±1% accuracy. The

constant charging current is programmable with a single sense resistor.

Deeply discharged batteries are automatically trickle charged at 15% of the programmed constant

charging current until the cell voltage exceeds 8.4V. The charge cycle is terminated once the charging

current drops to a level set by an on-chip resistor and an external resistor, and a new charge cycle

automatically restarts if the battery voltage falls below 12V. ACE4703 will automatically enter sleep mode

when input voltage is lower than battery voltage.

Other features include undervoltage lockout, battery temperature monitoring and status indication, etc.

Features

Application

Absolute Maximum Ratings

Parameter

Max

Unit

Voltage from VCC, VG, DRV, CHRG, DONE to GND

-0.3 ~ 30

V

Voltage from CSP, BAT to GND

-0.3 ~ 28

V

Voltage from COM3 to GND

6.5

V

Voltage from Other Pins to GND

μA

Storage Temperature

-65 ~ 150

℃

Operating Ambient Temperature

-40 ~ 85

℃

Lead Temperature (Soldering, 10 seconds)

300

℃