BQ24741RHDR

更新时间： 2024-02-20 17:47:44

品牌	Logo	应用领域
德州仪器 - TI		电源电路电池电源管理电路
页数	文件大小	规格书
30页	1379K
描述
Li-Ion or Li-Polymer Battery Charger with Low Iq and Accurate Trickle Charge

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BQ24741RHDR 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：	QFN
包装说明：	5 X 5 MM, GREEN, PLASTIC, QFN-28	针数：	28
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.81
Is Samacsys：	N	可调阈值：	YES
模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT	JESD-30 代码：	S-PQCC-N28
JESD-609代码：	e4	长度：	5 mm
湿度敏感等级：	2	信道数量：	1
功能数量：	1	端子数量：	28
最高工作温度：	125 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	HVQCCN
封装等效代码：	LCC28,.2SQ,20	封装形状：	SQUARE
封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	峰值回流温度（摄氏度）：	260
电源：	8/24 V	认证状态：	Not Qualified
座面最大高度：	1 mm	子类别：	Power Management Circuits
最大供电电压 (Vsup)：	24 V	最小供电电压 (Vsup)：	9 V
标称供电电压 (Vsup)：	20 V	表面贴装：	YES
温度等级：	AUTOMOTIVE	端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	5 mm	Base Number Matches：	1

BQ24741RHDR 数据手册

bq24741

www.ti.com ...................................................................................................................................................... SLUS875A–MARCH 2009–REVISED MARCH 2009

Li-Ion or Li-Polymer Battery Charger with Low I_qand Accurate Trickle Charge

FEATURES

APPLICATIONS

•

Notebook and Ultra-Mobile Computers

Portable Data Capture Terminals

Portable Printers

Medical Diagnostics Equipment

Battery Bay Chargers

•

NMOS-NMOS Synchronous Buck Converter

•

Resistor-Programmable Switching Frequency

between 300 kHz and 800 kHz

•

8 V-24 V Input Voltage Operation Range

Cells Pin Support Two to Four Li-Ion Cells up

to 18 V Battery Voltage

Battery Back-up Systems

•

Analog Inputs with Ratiometric Programming

via Resistors or DAC/GPIO

DESCRIPTION

The bq24741 is

a high-efficiency, synchronous

–

Charge Voltage (4-4.512 V/cell)

Charge Current (up to 10 A)

Adapter Current Limit for DPM

battery charger with integrated compensation,

offering low component count for space-constrained

Li-ion or Li-polymer battery charging applications.

Ratiometric charge current and voltage programming

allows high regulation accuracies, and can be either

hardwired with resistors or programmed by the

system power-management microcontroller using a

DAC or GPIOs.

•

High-Accuracy Voltage and Current Regulation

–

±0.5% Charge Voltage Accuracy

±3% Charge Current Accuracy

±3% Adapter Current Accuracy

±2% Input Current Sense Amp Accuracy

The bq24741 charges two, three, or four series Li+

cells, supporting up to 10 A of charge current, and is

available in a 28-pin, 5x5-mm²thin QFN package.

•

150 mA Trickle-charge Current with ±33%

Accuracy Down to Zero Battery Voltage

Safety Protection

Text for space

–

Input Overvoltage Protection

Battery Overvoltage Protection

Charger Overcurrent Protection

Thermal Shutdown Protection

Text for space

28 27

26 25

24 23

•

Status and Monitoring Outputs

–

Adapter Present Indicator

ACN

DPMDET

CELLS

Programmable Input Power Detect with

Adjustable Threshold

CSP

CSN

ACP

–

Dynamic Power Management (DPM) with

Status Indicator

bq24741

QFN-28

TOP VIEW

LPMOD

ACDET

ACSET

BAT

Current Drawn from Input Source

•

Charge Enable Pin

ISET

Internal Soft-Start

IADAPT

LPREF

Internal Loop Compensation

13 14

25 ns Minimum Driver Dead-Time and 99.5%

Maximum Effective Duty Cycle

28-pin, 5x5-mm²QFN package

•

Energy Star Low I_q

–

< 10 µA Off-State Battery Discharge Current

< 1.5 mA Off-State Input Quiescent Current

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 the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...30

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BQ24741RHDR 替代型号

型号	品牌	替代类型	描述	数据表
BQ24741RHDT	TI	完全替代	Li-Ion or Li-Polymer Battery Charger with Low Iq and Accurate Trickle Charge
BQ24742RHDR	TI	类似代替	1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC28, 5 X 5 MM, GREEN, PLASTIC, QFN-28
BQ24745RHDR	TI	类似代替	SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input Current Detect Compara

与BQ24741RHDR相关器件

型号	品牌	获取价格	描述	数据表
BQ24741RHDT	TI	获取价格	Li-Ion or Li-Polymer Battery Charger with Low Iq and Accurate Trickle Charge
BQ24742RHDR	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC28, 5 X 5 MM, GREEN, PLASTIC, QFN-28
BQ24742RHDT	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC28, 5 X 5 MM, GREEN, PLASTIC, QFN-28
BQ24745	TI	获取价格	SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input Current Detect Compara
BQ24745RHDR	TI	获取价格	SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input Current Detect Compara
BQ24745RHDRG4	TI	获取价格	SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input Current Detect Compara
BQ24745RHDT	TI	获取价格	SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input Current Detect Compara
BQ24747	TI	获取价格	SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input Current Detect Compara
BQ24747RHDR	TI	获取价格	SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input Current Detect Compara
BQ24747RHDT	TI	获取价格	SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input Current Detect Compara

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