EUP8054X 参数 Datasheet PDF下载

EUP8054/8054X

Pin Configurations

Package Type

Pin

Configurations

TSOT-25

TDFN-6

Pin Description

PIN

TSOT-25

TDFN6

DESCRIPTION

CHRG

GND

BAT

V

CC

PROG

N/C

1

2

3

4

5

1

2

6

4

3

5

Open-Drain Status Output

Ground

Charge Current Output

Positive Input Supply Voltage

Charge Current Program, Charge Current Monitor and Shutdown Pin.

No connection

Pin Functions

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, a weak pull-down of approximately 12µA is

connected to the CHRG pin, indicating a “AC present” condition. When the EUP8054 detects an undervoltage

lockout condition, CHRG is forced high impedance.

GND :

Ground.

BAT :

Charge Current Output. Provides charge current to the battery and regulates the final float voltage to 4.2V.

An internal precision resistor divider from this pin sets the float voltage which is disconnected in shutdown

mode.

V

CC

:

Positive Input Supply Voltage. Provides power to the charger. V

CC

can range from 4.35V to 6.5V and

should be bypassed with at least a 1µF capacitor. When V

CC

drops to within 30mV of the BAT pin voltage, the

EUP8054 enters shutdown mode, dropping IBAT to less than 2µA.

DS8054

Ver1.1

Jan. 2007

3