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bq24171RGYT

更新时间： 2024-11-16 12:50:35
品牌 Logo 应用领域
德州仪器 - TI 电源电路电池开关电源管理电路
页数 文件大小 规格书
35页 2326K
描述
JEITA Compliant Stand-Alone Switch-Mode Li-Ion and Li-Polymer Battery Charger with Integrated MOSFETs and Power Path Selector

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bq24171RGYT 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：HVQCCN,针数：24
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：0.8模拟集成电路 - 其他类型：BATTERY CHARGE CONTROLLER
控制技术：PULSE WIDTH MODULATION最大输入电压：17 V
最小输入电压：4.5 VJESD-30 代码：R-PQCC-N24
JESD-609代码：e4长度：5.5 mm
湿度敏感等级：2功能数量：1
端子数量：24最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：4 A
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装形状：RECTANGULAR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：0.9 mm最大供电电流 (Isup)：5 mA
表面贴装：YES切换器配置：BUCK
最大切换频率：1840 kHz温度等级：INDUSTRIAL
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：+3.6V处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：3.5 mmBase Number Matches：1

bq24171RGYT 数据手册

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bq24171  
www.ti.com  
SLUSAF2A –FEBRUARY 2011–REVISED MAY 2011  
JEITA Compliant Stand-Alone Switch-Mode Li-Ion and Li-Polymer  
Battery Charger with Integrated MOSFETs and Power Path Selector  
Check for Samples: bq24171  
1
FEATURES  
APPLICATIONS  
•
JEITA Compatible Battery Temperature  
Sensing  
•
•
•
•
•
•
•
Tablet PC  
Netbook and Ultra-Mobile Computers  
Portable Data Capture Terminals  
Portable Printers  
•
1.6MHz Synchronous Switch-Mode Charger  
with 4A Integrated N-MOSFETs  
•
•
Up to 94% Efficiency  
Medical Diagnostics Equipment  
Battery Bay Chargers  
30V Input Rating with Adjustable Over-Voltage  
Protection  
Battery Back-Up Systems  
–
4.5V to 17V Input Operating Voltage  
Battery Charge Voltage  
1, 2, or 3-Cell with 4.2V/Cell  
High Integration  
•
•
DESCRIPTION  
–
The bq24171 is highly integrated stand-alone Li-ion  
and Li-polymer switch-mode battery charger with two  
integrated N-channel power MOSFETs. It offers a  
constant-frequency synchronous PWM controller with  
high accuracy regulation of input current, charge  
current, and voltage. It closely monitors the battery  
pack temperature and allows charge only in a JEITA  
profile compatible window with lower charge rate at  
low temperature and lower charge voltage at high  
temperature. It also provides battery detection,  
pre-conditioning, charge termination, and charge  
status monitoring. The thermal regulation loop  
reduces charge current to maintain the junction  
temperature of 120°C during operation.  
–
Automatic Power Path Selector Between  
Adapter and Battery  
–
–
–
–
–
Dynamic Power Management  
Integrated 20-V Switching MOSFETs  
Integrated Bootstrap Diode  
Internal Loop Compensation  
Internal Digital Soft Start  
•
Safety  
–
Thermal Regulation Loop Throttles Back  
Current to Limit Tj = 120°C  
The bq24171 charges the battery in three phases:  
preconditioning, constant current, and constant  
voltage. It is adjustable for up to three series Li+  
cells.  
–
–
Thermal Shutdown  
Battery Thermistor Sense Hot/Cold Charge  
Suspend & Battery Detect  
–
–
Input Over-Voltage Protection with  
Programmable Threshold  
Charge is terminated when the current reaches 10%  
of the fast charge rate. A programmable charge timer  
offers a safety back up. The bq24171 automatically  
restarts the charge cycle if the battery voltage falls  
Cycle-by-Cycle Current Limit  
•
Accuracy  
below an internal threshold, and enters  
a
–
–
–
±0.5% Charge Voltage Regulation  
low-quiescent current sleep mode when the input  
voltage falls below the battery voltage.  
±4% Charge Current Regulation  
±4% Input Current Regulation  
The bq24171 features Dynamic Power Management  
(DPM) to reduce the charge current when the input  
power limit is reached to avoid over-loading the  
adapter. A highly-accurate current-sense amplifier  
enables precise measurement of input current from  
adapter to monitor overall system power.  
•
•
•
Less than 15μA Battery Current with Adapter  
Removed  
Less than 1.5mA Input Current with Adapter  
Present and Charge Disabled  
Small QFN Package  
–
3.5mm × 5.5mm QFN-24 Pin  
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 © 2011, Texas Instruments Incorporated  
 
 
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bq24171RGYT 替代型号

型号 品牌 替代类型 描述 数据表
bq24171RGYR TI

完全替代

 JEITA Compliant Stand-Alone Switch-Mode Li-Ion and Li-Polymer Battery Charger with Integra

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