STC3105 datasheet(1/23 Pages) STMICROELECTRONICS

部件名	STC3105

功能描述	Battery monitor IC with alarm output for gas gauge applications

PDF	23 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 23 page

September 2011

Doc ID 022198 Rev 1

1/23

23

STC3105

Battery monitor IC with alarm output for gas gauge applications

Features

■ 0.5% accuracy battery voltage monitoring

■ Low battery alarm output with programmable

thresholds

■ Low power: 60 µA in power-saving mode, 2 µA

max in standby mode

■ Ideal for implementation of robust gas gauge

systems using open-circuit voltage and

coulomb counter methods

■ Small 3x2 mm package

Applications

■ Mobile phones, multimedia players, digital

cameras

■ Portable medical equipment

Description

The STC3105 battery monitor includes the

hardware functions required to implement a low-

cost gas gauge for battery monitoring. The

STC3105 uses accurate measurements of the

battery voltage to estimate a battery’s state-of-

charge (SOC). It uses a low cost sense resistor to

precisely sense the charge or discharge states,

detect light-load conditions without ambiguity for

voltage measurements, and accurate SOC

calculation. The coulomb counter method is used

for SOC tracking in high-load conditions.

An alarm output signals a low SOC condition, and

can also indicate low battery voltage. The alarm

threshold levels are programmable.

The device is programmable through an I2C

interface.

TDFN8 3x2

(Plastic micropackage)

1

2

3

4

5

6

7

8

ALM

SCL

GND

CG

VIN

SDA

VCC

NC

Pin connections

(top view)

www.st.com

类似零件编号 - STC3105

制造商	部件名	数据表	功能描述
STMicroelectronics	STC3100	292Kb / 21P	Battery monitor IC with Coulomb counter/gas gauge 27-Jan-2009
	STC3100IQT	292Kb / 21P	Battery monitor IC with Coulomb counter/gas gauge 27-Jan-2009
	STC3100IST	292Kb / 21P	Battery monitor IC with Coulomb counter/gas gauge 27-Jan-2009

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类似说明 - STC3105

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