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BQ24745RHDT PDF预览

BQ24745RHDT

更新时间： 2024-11-26 04:34:39
品牌 Logo 应用领域
德州仪器 - TI 电源电路电池比较器电源管理电路
页数 文件大小 规格书
36页 1672K
描述
SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input Current Detect Comparator

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中文翻译

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BQ24745RHDT 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Not Recommended零件包装代码：QFN
包装说明：HVQCCN, LCC28,.2SQ,20针数：28
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：7.53可调阈值：YES
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-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：
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：7/24 V认证状态：Not Qualified
座面最大高度：1 mm子类别：Power Management Circuits
最大供电电流 (Isup)：12 mA最大供电电压 (Vsup)：24 V
最小供电电压 (Vsup)：7 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
阈值电压标称：+2.4V处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：5 mmBase Number Matches：1

BQ24745RHDT 数据手册

 浏览型号BQ24745RHDT的Datasheet PDF文件第2页浏览型号BQ24745RHDT的Datasheet PDF文件第3页浏览型号BQ24745RHDT的Datasheet PDF文件第4页浏览型号BQ24745RHDT的Datasheet PDF文件第5页浏览型号BQ24745RHDT的Datasheet PDF文件第6页浏览型号BQ24745RHDT的Datasheet PDF文件第7页 
bq24745  
www.ti.com  
SLUS761–DECEMBER 2007  
SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input  
Current Detect Comparator  
1
FEATURES  
•
< 1 mA Input DCIN Current with Adapter  
Present and Charge Disabled  
28-pin, 5x5-mm2 QFN Package  
•
•
•
NMOS-NMOS Synchronous Buck Converter  
with 300 kHz Frequency and >95% Efficiency  
•
30-ns Minimum Driver Dead-time and 99.5%  
Maximum Effective Duty Cycle  
APPLICATIONS  
•
•
•
•
•
•
Notebook and Ultra-Mobile Computers  
Portable Data-Capture Terminals  
Portable Printers  
Medical Diagnostics Equipment  
Battery Bay Chargers  
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  
Battery Back-up Systems  
•
•
Integration  
–
Input Current Comparator, With Adjustable  
DESCRIPTION  
Threshold and Hysteresis  
The bq24745 is  
a high-efficiency, synchronous  
–
Internal Soft-Start  
battery charger with an integrated input-current  
comparator, offering low component count for  
space-constrained, multi-chemistry battery-charging  
applications. SMBus input-current, charge-current,  
and charge-voltage DACs allow very high regulation  
accuracies that can be easily programmed by the  
system power-management microcontroller using the  
SMBus. The bq24745 charges two, three, or four  
series Li+ cells, and is available in a 28-pin, 5x5 mm2  
thin QFN package.  
Safety  
–
–
Input Overvoltage Protection (OVP)  
Dynamic Power Management (DPM)  
•
•
•
Up to 19.2 V Battery Voltage  
6 V–24 V AC/DC-Adapter Operating Range  
Simplified SMBus Control  
–
–
–
Charge Voltage DAC (1.024 V–19.2 V)  
Charge Current DAC (128 mA–8.064 A)  
Adapter Current Limit DPM DAC (256  
mA–11.004 A)  
23  
28  
27  
26  
25  
24  
22  
•
Status and Monitoring Outputs  
ICREF  
ACIN  
VDDP  
LGATE  
PGND  
1
2
3
4
21  
20  
19  
–
–
–
AC/DC Adapter Present with Adjustable  
Voltage Threshold  
Input Current Comparator, With Adjustable  
Threshold and Hysteresis  
VREF  
bq24745  
28 LD QFN  
TOP VIEW  
CSOP  
CSON  
18  
17  
EAO  
EAI  
Current Sense Amplifier for Current Drawn  
From Input Source  
5
6
7
FBO  
CE  
NC  
16  
15  
•
Charge Any Battery Chemistry: Li+, NiCd,  
NiMH, Lead Acid, etc.  
VFB  
•
•
•
Cells Pin Supports Two to Four Li-Ion Cells  
Charge Enable Pin  
8
9
10  
11  
12  
13  
14  
< 10-µBattery Current with Adapter Removed  
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...36

中文翻译

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BQ24745RHDT 替代型号

型号 品牌 替代类型 描述 数据表
BQ24745RHDRG4 TI

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