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BQ24705RGET

更新时间： 2024-11-19 04:34:39
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 1548K
描述
Host-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect

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中文翻译

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BQ24705RGET 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Active零件包装代码：QFN
包装说明：VQFN-24针数：24
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：5.13Is Samacsys：N
可调阈值：YES模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码：S-PQCC-N24JESD-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：封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN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
认证状态：Not Qualified座面最大高度：1 mm
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：OTHER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

BQ24705RGET 数据手册

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bq24705  
www.ti.com  
SLUS779–DECEMBER 2007  
Host-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect  
1
FEATURES  
APPLICATIONS  
•
•
•
•
•
•
Notebook and Ultra-Mobile Computers  
Portable Data-Capture Terminals  
Portable Printers  
Medical Diagnostics Equipment  
Battery Bay Chargers  
•
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 and  
system power selector logic, offering low component  
count for space-constrained 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.  
–
Reverse-Conduction Protection Input FET  
•
•
•
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  
19  
24  
23  
22  
21  
20  
–
–
Charge Voltage (4-4.512 V/cell)  
DPMDET  
CELLS  
SRP  
1
2
3
4
18  
17  
16  
PVCC  
CE  
Charge Current (up to 8 A, with 10-mΩ  
Sense Resistor)  
ACN  
–
Adapter Current Limit (DPM)  
SRN  
BAT  
•
•
Status and Monitoring Outputs  
15  
14  
ACP  
–
AC/DC Adapter Present with Programmable  
Voltage Threshold  
5
6
ACDET  
SRSET  
13  
ACSET  
–
–
DPM Loop Active  
7
8
9
10  
11  
12  
Current Drawn from Input Source  
Supports Any Battery Chemistry: Li+, NiCd,  
NiMH, Lead Acid, etc.  
•
•
•
Charge Enable  
Figure 1. bq24705, 24 LD QFN, Top View  
10-µA Off-State Battery Current  
24-pin, 4x4-mm QFN Package  
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.  
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, Texas Instruments Incorporated  
1234567...30

中文翻译

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BQ24705RGET 替代型号

型号 品牌 替代类型 描述 数据表
BQ24705RGER TI

完全替代

 Host-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect
BQ24705RGETG4 TI

类似代替

 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24, 4 X 4 MM, GREEN, PLASTIC, VQFN-24

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