ACE4054C

500mA/1.5A Standalone Linear Li-Ion Battery Charge

VER 1.2

2

Absolute Maximum Ratings

Parameter

Max

Unit

VCC

-0.3 ~6.5

V

PROG

-0.3 ~ VCC+0.3

V

BAT

-0.3 ~ 5

V

CHRG

-0.3 ~ 6.5

V

BAT Short-Circuit Duration

Continuous

PROG Pin Current

2

mA

Maximum Junction Temperature

125

℃

Operating Ambient Temperature Range

-40 ~ 85

℃

Storage Temperature Range

-40 ~ 125

℃

Note: Exceed these limits to damage to the device.

Exposure to absolute maximum rating conditions may affect device reliability.

Packaging Type

SOT-23-6

ESOP-8

6

5

4

1

8

2

7

3

6

4

5

1

2

3

Pin Description

CHRG: Open-Drain Charge Status Output. The CHRG pin outputs low when the battery is charging.

STDBY: Open-Drain Charge Status Output. The STDBY pin outputs low when the battery is full.

GND: Ground.

BAT: Charge Current Output. This pin provides charge current to the battery and regulates the final float

voltage to 4.2V which is set by an internal precision resistor divider.

VCC: Positive Input Supply. Needs to be bypassed with at least a 1

μF capacitor. When input voltage

drops to within 30mV of the BAT pin voltage, the ACE4054C switches to shutdown mode.

PROG: 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, RPROG, to GND pin. The charge

current can be calculated using the following formula:

SOT-23-6

ESOP-8

Description

1

7

CHRG

2

3

GND

3

5

BAT

4

4

VCC

5

6

STDBY

6

2

PROG

1.8

NC