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BQ24705RGETG4 PDF预览

BQ24705RGETG4

更新时间: 2024-01-25 04:25:07
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
32页 1728K
描述
1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24, 4 X 4 MM, GREEN, PLASTIC, VQFN-24

BQ24705RGETG4 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:4 X 4 MM, GREEN, PLASTIC, VQFN-24针数:24
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.14
Is Samacsys:N可调阈值:YES
模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUITJESD-30 代码:S-PQCC-N24
JESD-609代码:e4长度:4 mm
湿度敏感等级:2信道数量:1
功能数量:1端子数量:24
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:LCC24,.16SQ,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:7/24 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):5 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:4 mmBase Number Matches:1

BQ24705RGETG4 数据手册

 浏览型号BQ24705RGETG4的Datasheet PDF文件第2页浏览型号BQ24705RGETG4的Datasheet PDF文件第3页浏览型号BQ24705RGETG4的Datasheet PDF文件第4页浏览型号BQ24705RGETG4的Datasheet PDF文件第5页浏览型号BQ24705RGETG4的Datasheet PDF文件第6页浏览型号BQ24705RGETG4的Datasheet PDF文件第7页 
Not Recommended for New Designs  
bq24705  
www.ti.com ............................................................................................................................................... SLUS779BDECEMBER 2007REVISED MARCH 2009  
600-kHz, Host-Controlled Multi-Cell Battery Charger With Input Overvoltage Protection  
1
FEATURES  
APPLICATIONS  
Notebook and Ultra-Mobile Computers  
Portable Data-Capture Terminals  
Portable Printers  
Medical Diagnostics Equipment  
Battery Bay Chargers  
2
NMOS-NMOS Synchronous Buck Converter  
with 600 kHz Frequency and >95% Efficiency  
30-ns Minimum Driver Dead-time and 99.5%  
Maximum Effective Duty Cycle  
High-Accuracy Voltage and Current Regulation  
Battery Back-Up Systems  
±0.5% Charge Voltage Accuracy  
±3% Charge Current Accuracy  
DESCRIPTION  
±3% Adapter Current Accuracy  
±2% Input Current Sense Amp Accuracy  
The bq24705 is  
a high-efficiency, synchronous  
battery charger with integrated compensation,  
offering low component count for space-limited  
multi-chemistry battery charging applications. 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.  
Integration  
Internal Loop Compensation  
Internal Soft-Start  
Safety  
Input Overvoltage Protection (OVP)  
Dynamic Power Management (DPM) with  
Status Indicator  
The bq24705 charges two, three, or four series Li+  
cells, supporting up to 8 A of charge current, and is  
available in a 24-pin, 4x4-mm thin QFN package.  
Supports Two, Three, or Four Li+ Cells  
5 – 24 V AC/DC-Adapter Operating Range  
Analog Inputs with Ratiometric Programming  
via Resistors or DAC/GPIO Host Control  
Charge Voltage (4-4.512 V/cell)  
19  
24  
23  
22  
21  
20  
Charge Current (up to 8 A, with 10-m  
Sense Resistor)  
DPMDET  
CELLS  
SRP  
1
2
3
4
18  
17  
16  
PVCC  
CHGEN  
ACN  
Adapter Current Limit (DPM)  
bq24705  
QFN-24  
Status and Monitoring Outputs  
SRN  
BAT  
AC/DC Adapter Present with Programmable  
Voltage Threshold  
15  
14  
TOP VIEW  
ACP  
5
6
ACDET  
DPM Loop Active (DPMDET)  
SRSET  
13  
ACSET  
Current Drawn from Input Source  
7
8
9
10  
11  
12  
Supports Any Battery Chemistry: Li+, NiCd,  
NiMH, Lead Acid, etc.  
Charge Enable  
10-µA Off-State Battery Current  
24-pin, 4x4-mm QFN Package  
Figure 1. bq24705, 24 LD QFN, Top View  
1
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.  
2
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.  
Copyright © 2007–2009, Texas Instruments Incorporated  

BQ24705RGETG4 替代型号

型号 品牌 替代类型 描述 数据表
BQ24705RGET TI

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Host-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect
BQ24705RGER TI

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Host-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect

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