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BQ24721RHBT PDF预览

BQ24721RHBT

更新时间： 2024-09-23 23:16:23
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
48页 5629K
描述
ADVANCED MULTI-CHEMISTRY AND MULTI-CELL SYNCHRONOUS SWITCH-MODE CHARGER AND SYSTEM POWER SELECTOR

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中文翻译

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BQ24721RHBT 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：5 X 5 MM, GREEN, PLASTIC, QFN-32针数：32
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.66
Is Samacsys：N可调阈值：NO
模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUITJESD-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

BQ24721RHBT 数据手册

 浏览型号BQ24721RHBT的Datasheet PDF文件第2页浏览型号BQ24721RHBT的Datasheet PDF文件第3页浏览型号BQ24721RHBT的Datasheet PDF文件第4页浏览型号BQ24721RHBT的Datasheet PDF文件第5页浏览型号BQ24721RHBT的Datasheet PDF文件第6页浏览型号BQ24721RHBT的Datasheet PDF文件第7页 
bq24721  
www.ti.com  
SLUS683–NOVEMBER 2005  
ADVANCED MULTI-CHEMISTRY AND MULTI-CELL SYNCHRONOUS SWITCH-MODE  
CHARGER AND SYSTEM POWER SELECTOR  
FEATURES  
APPLICATIONS  
•
•
•
Portable Notebook Computers  
•
High Efficiency NMOS-NMOS Synchronous  
Buck Converter With User-Selectable 300 kHz  
or 500 kHz frequency  
SBS-Like (1) SMBus Interface for Control and  
Status Communications With Host  
Portable DVD Players  
Webpads, PC Tablets  
•
•
DESCRIPTION  
Programmable Battery Voltage, Charge  
Current, and AC Adapter Current via SBS-Like  
SMBus Interface  
The bq24721 is a simple to use, high efficiency  
synchronous battery pack charger with high level of  
integration for portable applications. This device  
implements a high performance analog front-end that  
easily interfaces to the system power management  
micro-controller through a simplified SBS-like SMBus  
interface.  
•
•
•
0.4% Charge Voltage Regulation Accuracy  
3% Charge Current Regulation Accuracy  
3% Adapter Current Regulation Accuracy  
Dynamic Power Management (DPM)  
The dynamic power management (DPM) function  
modifies the charge current depending on system  
load conditions, avoiding ac adapter overload.  
•
2% Accuracy Integrated Charge and AC  
Adapter 20x Current Amplifier Output  
•
•
•
•
•
Battery Pack Voltage Range 0 V – 19.2 V  
AC Adapter Operating Range 8 V – 28 V  
99.5% Max Duty Cycle  
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.  
Internal Soft Start  
Integrated 5% 5-V LDO When AC Adapter  
Applied  
The adapter isolation diode can be bypassed with an  
external MOSFET using a control signal provided by  
the bq24721, thus reducing overall power dissipation.  
•
•
•
6-V Drive Supply Voltage for Increased  
Efficiency  
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.  
Reverse Battery to Adapter Discharge  
Protection  
Battery/Adapter to System Power Selector  
Function  
5x5 QFN PACKAGE (TOP VIEW)  
•
•
•
Charge and Adapter Overcurrent Protection  
Battery Thermistor Sense, TS, Comparators  
Available in 32-Pin 5x5mm QFN Package  
1
24  
23  
22  
21  
20  
19  
CHGEN  
BATDRV  
SYS  
2
ACDRV  
3
4
5
6
7
8
SYNP  
SYNN  
SRP  
ACN  
ACP  
bq24721  
ACDET  
SRN  
BYPASS  
EAO  
18 BAT  
17  
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 eight 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.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2005, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
1234567...48

中文翻译

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BQ24721RHBT 替代型号

型号 品牌 替代类型 描述 数据表
BQ24721RHBTG4 TI

完全替代

 ADVANCED MULTI-CHEMISTRY AND MULTI-CELL SYNCHRONOUS SWITCH-MODE CHARGER AND SYSTEM POWER S
BQ24721CRHBTG4 TI

类似代替

 ADVANCED MULTI-CHEMISTRY AND MULTI-CELL SYNCHRONOUS SWITCH-MODE CHARGER AND SYSTEM POWER S
BQ24721CRHBT TI

类似代替

 ADVANCED MULTI-CHEMISTRY AND MULTI-CELL SYNCHRONOUS SWITCH-MODE CHARGER AND SYSTEM POWER S

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