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SEMICONDUCTOR

TECHNI CA L DATA

DW01B

Revision No : 3

General Description

The DW01B Lithium-ion/Polymer Battery protection IC is designed to protect lithium-ion/polymer

battery from damage or degrading the lifetime due to over-charge, over-discharge, and/or overcurrent

for one-cell lithium-ion/polymer battery powered systems, such as cellular phones.

The ultra-small package and less required external components make it ideal to integrate the DW01B

into the limited space of battery pack. The accurate ±50mV overcharging detection voltage ensures

safe and full utilization charging. The very low standby current drains little current from the cell while

in storage.

Features

� Reduction in Board Size due to Miniature Package SOT-23-6.

� Ultra-Low Quiescent Current at 2μA (Vcc=3.5V).

� Precision Overcharge Protection Voltage (4.30V ± 50mV)

� Over-discharge Protection voltage between (2.50V ± 75mV)

� Over-current Protection voltage between (0.15V ± 20mV)

� Load Detection Function during Overcharge Mode.

� Two Detection Levels for Overcurrent Protection.

� -40°C to +85°C operating temperature range

Applications

Protection to One-Cell Lithium-Ion /Lithium-Polymer Battery Pack

Pin Configuration

Pin Name

Pin Number

Pin Function

DO

1

Discharge control output terminal

VM

2

Charge/discharge current detection input

CO

3

Charge control output terminal

NC

4

Not connected

5

Power input

6

Power ground terminal

1

3

2

4

5

6