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BQ24721RHBRG4

更新时间： 2024-02-03 18:50:24

品牌	Logo	应用领域
德州仪器 - TI		电源电路开关电源管理电路化工
页数	文件大小	规格书
60页	1961K
描述
ADVANCED MULTI-CHEMISTRY AND MULTI-CELL SYNCHRONOUS SWITCH-MODE CHARGER AND SYSTEM POWER SELECTOR

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技术参数
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BQ24721RHBRG4 技术参数

是否无铅：	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：	HVQCCN, LCC32,.2SQ,20	针数：	32
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.68
可调阈值：	NO	模拟集成电路 - 其他类型：	POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码：	S-PQCC-N32	长度：	5 mm
信道数量：	1	功能数量：	1
端子数量：	32	最高工作温度：	85 °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：	LCC32,.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）：	NOT SPECIFIED	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)：	8 V	标称供电电压 (Vsup)：	8 V
表面贴装：	YES	温度等级：	INDUSTRIAL
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

BQ24721RHBRG4 数据手册

bq24721, bq24721C

www.ti.com

SLUS683C–NOVEMBER 2005–REVISED DECEMBER 2006

ADVANCED MULTI-CHEMISTRY AND MULTI-CELL SYNCHRONOUS SWITCH-MODE

CHARGER AND SYSTEM POWER SELECTOR

FEATURES

APPLICATIONS

•

Portable Notebook Computers

Portable DVD Players

Webpads, PC Tablets

•

High Efficiency NMOS-NMOS Synchronous

Buck Converter With User-Selectable 300 kHz

or 500 kHz frequency

•

bq24721C Offers Softer Turn-On, Stronger

Turn-Off

SBS-Like ⁽¹⁾SMBus Interface for Control and

Status Communications With Host

DESCRIPTION

The bq24721 is a high efficiency synchronous

battery pack charger with high level of integration for

portable applications. This device implements a high

performance analog front-end that interfaces to the

system power management micro-controller through

a simplified SBS-like SMBus interface.

Programmable Battery Voltage, Charge

Current, and AC Adapter Current via SBS-Like

SMBus Interface

•

0.4% Charge Voltage Regulation Accuracy

3% Charge Current Regulation Accuracy

The dynamic power management (DPM) function

modifies the charge current depending on system

load conditions, avoiding ac adapter overload.

3% Adapter Current Regulation Accuracy

Dynamic Power Management (DPM)

High accuracy current sense amplifiers enable

accurate measurement of either the charge current

or the ac adapter current, allowing termination of

nonsmart packs and monitoring of overall system

power.

•

2% Accuracy Integrated Charge and AC

Adapter 20× Current Amplifier Output

3-Cell and 4-Cell Li-Ion Voltage Regulation

9 V, 12 V–14.4 V, 16 V–19.2 V

Battery Pack Voltage Operating Range

0 V–19.2 V

The adapter isolation diode can be bypassed or

entirely replaced with an external MOSFET using a

control signal provided by the bq24721, thus

reducing overall power dissipation.

•

AC Adapter Operating Range 8 V–28 V

99.5% Max Duty Cycle

Integrated features such as charger soft start, charge

overcurrent protection, and IC temperature

monitoring provide a second level of protection, in

addition to pack and system protection functions.

Internal Soft Start

Integrated 5% 5-V LDO When AC Adapter

Applied

•

6-V Drive Supply Voltage for Increased

Efficiency

5x5 QFN PACKAGE (TOP VIEW)

Reverse Battery to Adapter Discharge

Protection

CHGEN

BATDRV

SYS

Battery/Adapter to System Power Selector

Function

ACDRV

ACN

SYNP

SYNN

SRP

•

Charge and Adapter Overcurrent Protection

Battery Thermistor Sense, TS, Comparators

Available in 32-Pin 5x5-mm QFN Package

ACP

bq24721,

bq24721C

ACDET

SRN

BYPASS

EAO

18 BAT

EAI

IOUT

(1) SBS-Like interface is not 100% SBS compliant. SBS-Like

interface is SMBus1.1 complaint but does not support Packet

Error Correction (PEC). The control and status registers were

changed to simplify and enhance notebook charger control.

An 8-bit address (0x12) is used. See Table 1 for a

comparison between SBS-like vs SBS Specification.

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.

PowerPAD is a trademark of Texas Instruments.

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...60

中文翻译

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BQ24721RHBRG4 替代型号

型号	品牌	替代类型	描述	数据表
BQ24721CRHBT	TI	功能相似	ADVANCED MULTI-CHEMISTRY AND MULTI-CELL SYNCHRONOUS SWITCH-MODE CHARGER AND SYSTEM POWER S
BQ24721CRHBR	TI	功能相似	ADVANCED MULTI-CHEMISTRY AND MULTI-CELL SYNCHRONOUS SWITCH-MODE CHARGER AND SYSTEM POWER S
BQ24721RHBT	TI	功能相似	ADVANCED MULTI-CHEMISTRY AND MULTI-CELL SYNCHRONOUS SWITCH-MODE CHARGER AND SYSTEM POWER S

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BQ24721RHBT	TI	获取价格	ADVANCED MULTI-CHEMISTRY AND MULTI-CELL SYNCHRONOUS SWITCH-MODE CHARGER AND SYSTEM POWER S
BQ24721RHBT	ROCHESTER	获取价格	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQCC32, 5 X 5 MM, GREEN, PLASTIC, QFN-32
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BQ24725	TI	获取价格	2-4 Cell Li Battery SMBus Charge Controller with N-Channel Power MOSFET Selector and Advan
BQ24725A	TI	获取价格	1-4 Cell Li Battery SMBus Charge Controller with N-Channel Power MOSFET Selector and Advan
BQ24725A_17	TI	获取价格	1-4 Cell Li Battery SMBus Charge Controller with N-Channel Power MOSFET Selector and Advan
BQ24725ARGRR	TI	获取价格	1-4 Cell Li Battery SMBus Charge Controller with N-Channel Power MOSFET Selector and Advan
BQ24725ARGRT	TI	获取价格	1-4 Cell Li Battery SMBus Charge Controller with N-Channel Power MOSFET Selector and Advan
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