Datasheet > BQ2023PWRG4

BQ2023PWRG4

更新时间： 2024-10-28 14:48:07

品牌	Logo	应用领域
德州仪器 - TI		光电二极管
页数	文件大小	规格书
28页	354K
描述
1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, GREEN, PLASTIC, TSSOP-8

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BQ2023PWRG4 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	TSSOP, TSSOP8,.25	针数：	8
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.69
可调阈值：	NO	模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：	R-PDSO-G8	JESD-609代码：	e4
长度：	4.4 mm	湿度敏感等级：	2
信道数量：	1	功能数量：	1
端子数量：	8	最高工作温度：	70 °C
最低工作温度：	-20 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装等效代码：	TSSOP8,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260	电源：	2.4/5 V
认证状态：	Not Qualified	座面最大高度：	1.2 mm
子类别：	Power Management Circuits	最大供电电流 (Isup)：	0.06 mA
最大供电电压 (Vsup)：	5 V	最小供电电压 (Vsup)：	2.4 V
标称供电电压 (Vsup)：	3.6 V	表面贴装：	YES
技术：	CMOS	温度等级：	COMMERCIAL
端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	3 mm
Base Number Matches：	1

BQ2023PWRG4 数据手册

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SLUS480B – MAY 2001

Multifunction Monitoring IC Designed to

Work With an Intelligent Host Controller:

– Provides Accurate State of Charge

Information for Rechargeable Batteries

– Enhances Power and Charge

32 Bytes of General-Purpose RAM, 224

Bytes of FLASH, and 8 Bytes of Secure ID

ROM

Internal Temperature Sensor With 0.25°K

Resolution Eliminates the Need for an

External Thermistor

Management in the System

Supply Operation Down to 2.4 V; Ideal for

Single-Cell Li-Ion or Li-Pol Applications

Programmable Digital Output Port

Battery-Pack Removal Detection Input

Places the IC in the Sleep Mode When

System Is Not Present

Communicates Over Single-Wire SDQ

Serial Interface

Resolves Signals Down to 3.05 µVh

High-Accuracy Internal Timebase

Eliminates External Crystal Oscillator

High-Accuracy Coulometric Charge and

Discharge Current Integration

Low Power Consumption:

– Operating: 40 µA

– Sleep: 1.5 µA

Differential Current Sense Input

Automatic and Continuous Offset

Calibration and Compensation

PW PACKAGE

(TOP VIEW)

description

The bq2023 is an advanced battery monitoring IC

that accurately measures the charge and dis-

charge currents in rechargeable battery packs.

Intended for pack integration, the bq2023

contains all the necessary functions to form the

basis for an accurate battery gas gauge in cellular

phones, PDAs, or other portable products.

RBI

STAT

SRP

SRN

PDET

SDQ

Gas gauging is accomplished by coulomb counting (i.e., measuring the charge input to and subsequently

removed from the battery). The bq2023 achieves that by measuring the differential voltage drop across a

low-value series sense resistor between the negative terminal of the battery and the battery-pack negative

contact. An internal voltage-to-frequency converter (VFC) converts this voltage into charge and discharge

counts. The VFC is capable of resolving signals down to 3.05 µV. By using the accumulated counts in the

charge, discharge, and self-discharge registers, an intelligent host controller can determine battery

state-of-charge information. To improve accuracy, the bq2023 continuously measures and compensates offset

errors in the VFC.

The bq2023 works with the host controller in the portable system to implement the battery management system.

The host controller interprets the bq2023 data and communicates meaningful battery data to the end-user or

power-management system. The SDQ single-wire bus architecture allows multiple bq2023s to exist on the

same communications node simultaneously.

The bq2023 provides 224 bytes of flash memory, 8-bytes of secure ID ROM, and 32 bytes of RAM. The

nonvolatile memory maintains formatted battery monitor information, identification codes, warranty information,

or other critical battery parameters while the battery is temporarily shorted or deeply discharged.

AVAILABLE OPTIONS

PACKAGED DEVICE

8-LEAD TSSOP

(PW)

–20°C to 70°C

bq2023PW

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.

SDQ is a trademark of Texas Instruments.

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POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...28

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