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BQ24751ARHDRG4

更新时间： 2024-09-25 14:48:07
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
39页 1668K
描述
1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC28, 5 X 5 MM, GREEN, PLASTIC, QFN-28

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BQ24751ARHDRG4 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：5 X 5 MM, GREEN, PLASTIC, QFN-28针数：28
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.28
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-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：-40 °C
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
最大供电电压 (Vsup)：24 V最小供电电压 (Vsup)：5 V
标称供电电压 (Vsup)：7 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：5 mmBase Number Matches：1

BQ24751ARHDRG4 数据手册

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bq24751A  
www.ti.com ............................................................................................................................................. SLUS756C–SEPTEMBER 2007–REVISED MARCH 2009  
Host-controlled Multi-Chemistry Battery Charger With System Power Selector, AC  
Over-Power Protection, Programmable OVP and Low Iq  
1
FEATURES  
•
Energy Star Low Iq  
•
•
•
NMOS-NMOS Synchronous Buck Converter  
with 300 kHz Frequency and >95% Efficiency  
–
–
< 10-µA Off-State Battery Discharge Current  
< 1.5-mA Off-State Input Quiescent Current  
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  
–
Automatic System Power Selection From  
DESCRIPTION  
AC/DC Adapter or Battery  
Internal Loop Compensation  
Internal Soft Start  
The bq24751A 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. Ratiometric charge current and  
voltage programming allows very high regulation  
accuracies, and can be either hardwired with resistors  
or programmed by the system power-management  
microcontroller using a DAC or GPIOs.  
–
–
Safety  
–
–
–
–
Programmable Input Overvoltage  
Protection (OVP)  
Dynamic Power Management (DPM) with  
Status Indicator  
Programmable Inrush Adapter Power  
(ACOP) and Overcurrent (ACOC) Limits  
The bq24751A charges two, three, or four series Li+  
cells, supporting up to 10 A of charge current, and is  
available in a 28-pin, 5x5-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  
27 26 25 24 23 22  
28  
–
–
Charge Voltage (4-4.512 V/cell)  
1
2
CHGEN  
ACN  
LEARN  
20 CELLS  
SRP  
19  
21  
Charge Current (up to 10 A, with 10-mΩ  
sense resistor)  
bq24751A  
28 LD QFN  
TOP VIEW  
ACP  
3
4
5
6
–
Adapter Current Limit (DPM)  
ACDRV  
ACDET  
ACSET  
ACOP  
18 SRN  
•
Status and Monitoring Outputs  
BAT  
17  
–
AC/DC Adapter Present with Programmable  
Voltage Threshold  
16 SRSET  
IADAPT  
15  
7
–
Current Drawn from Input Source  
8
9
10 11 12 13 14  
•
•
Battery Learn Cycle Control  
Supports Any Battery Chemistry: Li+, NiCd,  
NiMH, Lead Acid, etc.  
•
•
Charge Enable  
28-pin, 5x5-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 © 2007–2009, Texas Instruments Incorporated  
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中文翻译

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BQ24751ARHDRG4 替代型号

型号 品牌 替代类型 描述 数据表
BQ24751ARHDTG4 TI

完全替代

 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC28, 5 X 5 MM, GREEN, PLASTIC, QFN-28
BQ24751ARHDT TI

完全替代

 Host-controlled Multi-Chemistry Battery Charger With System Power Selector, AC Over-Power
BQ24751ARHDR TI

完全替代

 Host-controlled Multi-Chemistry Battery Charger With System Power Selector, AC Over-Power

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BQ24751ARHDTG4 TI

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BQ24751BRHDR TI

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BQ24751BRHDRG4 TI

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BQ24751BRHDTG4 TI

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BQ24751RHDR TI

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BQ24751RHDRG4 TI

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 		Host-controlled Multi-chemistry Battery Charger
BQ24751RHDT TI

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