ACE4101

Max. 1.6A Li-ion Switching Charger IC

VER 1.4

2

Absolute Maximum Ratings

Parameter

Symbol

Max

Unit

Input voltage

6.5

V

Operating Junction Temperature

125

Ambient Temperature

-40 ~ 85

Storage temperature

- 55 ~ 150

ESD (HBM)

>2000

V

Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability.

Packaging Type

DFN3*3-10

DFN3*3-10

Description

Function

1

CHRG

Open‐Drain Charge Status Output. When the battery is charging, the CHRG pin is

pulled low by an internal N‐channel MOSFET. When the charge cycle is completed,

hen the ACE4101 detects an under voltage lockout condition, CHRG is forced high

impedance

2

ISET

Charge Current Program, Monitor the charge current and Shutdown. This pin set

to 1V in constant‐current mode. The charge current is programmed by connecting a

1% resistor, RISET, to GND pin

3

Ctrl

Sense Feedback Voltage Pin

4

EN

Enable Input Pin. Pulling the EN pin high places the ACE4101 into a low power

state where

the BAT drain current drops to less than 3μA and the supply current is

reduced to less than

50μA. For normal operation, pull the pin low

5

FB

Battery Feedback Voltage

6

VIIN

Positive Supply Voltage Input. This pin connects to the power devices inside the

chip. VIN ranges from 4V to 5.5V for normal operation. Operation down to the under

‐voltage lockout threshold is allowed with current limited wall adapters. Decouple

with a 10μF or larger surface mounted ceramic capacitor

7

SE

Switch Node Connection. This pin connects to the drains of the internal main and

synchronous power MOSFET switches. Connect to external inductor

8

GND

Ground

9

CHRIN

Power Path Output Voltage

10

BAT

Battery Charger Outp

ut Terminal. Connect a 22μF ceramic chip capacitor between

BAT and PGND to keep the ripple voltage small

CHRG

1

10

BAT

ISET

2

9

CHRI

Ctrl

3

8

GND

EN

4

7

SW

FB

5

6

VIN