BQ26500PW Datasheet

IC型號：
BQ26500PW
PDF描述：
SINGLE-CELL LI-ION AND BATTERY GAS GAUGE IC FOR HANDHELD APP...
文件大小：
334.22KB
PDF頁數(shù)：
27頁
芯片廠家：
TI

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bq26500

SLUS567A 鈭?JUNE, 2003 鈭?REVISED OCTOBER 2003

SINGLE CELL LI ION AND LI POL BATTERY GAS GAUGE IC

FOR HANDHELD APPLICATIONS (bqJUNIORt FAMILY)

FEATURES

Reports Accurate

State-of-Charge

in Li-Ion

and Li-Pol Cells, No System Processor

Calculations Needed

Reports Cell Temperature and Voltage

High-Accuracy Coulometric Charge and

Discharge Current Integration with

Automatic Offset Cancellation

Requires No Offset Calibration

Programmable Input/Output Port

Internal Time-Base Eliminates External

Crystal Oscillator

Four Automatic Low-Power Operating Modes

鈭?Active: < 100

碌A(chǔ)

鈭?Sleep: < 2.5

碌A(chǔ)

鈭?Ship: < 1.7

碌A(chǔ)

鈭?Hibernate: < 1.5

碌A(chǔ)

Small 8-Pin TSSOP Package

APPLICATIONS

PDAs

Smart Phones

MP3 Players

Digital Cameras

Internet Appliances

Handheld Devices

DESCRIPTION

The bq26500, the first in the bqJUNIORt family

of advanced gas gauge device for handhald

applications, is a highly accurate standalone

single-cell Li-Ion and Li-Pol battery capacity

monitoring and reporting device targeted at space

limited portable applications. The device monitors

a voltage drop across a small current sense

resistor connected in series with the battery to

determine charge and discharge activity of the

battery. Compensations for battery temperature,

self-discharge, and rate of discharge are applied

to the charge counter to provide available capacity

across a wide range of operating conditions.

Battery capacity is automatically recalibrated, or

learned, in the course of a discharge cycle from full

to empty. Internal registers include available

capacity, cell temperature and voltage,

state-of-charge, and status and control registers.

The bq26500 can operate directly from single-cell

Li-Ion and Li-Pol batteries and communicates to

the system over a simple one-wire bi-directional

serial interface. The 5-kbits/s HDQ bus interface

reduces communication overhead in the external

microcontroller.

SIMPLIFIED APPLICATION

PACK+

UDG鈭?3038

bq26500

RBI

GPIO

Li-Ion

Li-Pol

VCC

SRP

HDQ

VSS

SRN

HDQ

BAT

Protection

Controller

PACK鈭?/div>

Battery Pack

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

錚?/div>

2003, Texas Instruments Incorporated

www.ti.com

標(biāo)準(zhǔn)包裝
100
類別
集成電路 (IC)
家庭
PMIC - 電池管理
系列
bqJUNIOR™
功能
燃料，電量檢測計/監(jiān)控器
電池化學(xué)
鋰離子（Li-Ion）、鋰聚合物（Li-Pol）
電源電壓
2.6 V ~ 4.5 V
工作溫度
-20°C ~ 70°C
安裝類型
表面貼裝
封裝/外殼
8-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝
8-TSSOP
包裝
管件
配用
296-18398-ND - EVALUATION MOD FOR BQ26500-001
其它名稱
296-15848-5

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BQ26500PW Datasheet

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