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BQ24172RGYT PDF预览

BQ24172RGYT

更新时间： 2024-11-16 12:33:35
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德州仪器 - TI 电池开关
页数 文件大小 规格书
40页 2872K
描述
1.6-MHz Synchronous Switch-Mode Li-Ion and Li-Polymer Stand-Alone Battery Charger

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BQ24172RGYT 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：8542.39.00.01风险等级：0.78
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 V
JESD-30 代码：R-PQCC-N24JESD-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 mm
Base Number Matches：1

BQ24172RGYT 数据手册

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bq24170  
bq24172  
www.ti.com  
SLUSAD2B –NOVEMBER 2010–REVISED APRIL 2011  
1.6-MHz Synchronous Switch-Mode Li-Ion and Li-Polymer Stand-Alone Battery Charger  
with Integrated MOSFETs and Power Path Selector  
Check for Samples: bq24170, bq24172  
1
FEATURES  
APPLICATIONS  
•
1.6MHz Synchronous Switch-Mode Charger  
with 4A Integrated N-MOSFETs  
•
•
•
•
•
•
•
Tablet PC  
Netbook and Ultra-Mobile Computers  
Portable Data Capture Terminals  
Portable Printers  
•
•
Up to 94% Efficiency  
30V Input Rating with Adjustable Over-Voltage  
Protection  
Medical Diagnostics Equipment  
Battery Bay Chargers  
–
4.5V to 17V Input Operating Voltage Range  
•
•
Battery Charge Voltage  
Battery Back-Up Systems  
–
–
bq24170: 1, 2, or 3-Cell with 4.2V/Cell  
bq24172: Adjustable Charge Voltage  
DESCRIPTION  
The bq24170/172 is highly integrated stand-alone  
Li-ion and Li-polymer switch-mode battery charger  
with two integrated N-channel power MOSFETs. It  
High Integration  
–
Automatic Power Path Selector Between  
Adapter and Battery  
offers  
a
constant-frequency synchronous PWM  
–
–
–
–
–
Dynamic Power Management  
Integrated 20-V Switching MOSFETs  
Integrated Bootstrap Diode  
Internal Loop Compensation  
Internal Digital Soft Start  
controller with high accuracy regulation of input  
current, charge current, and voltage. It closely  
monitors the battery pack temperature to allow  
charge only in a preset temperature window. 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.  
•
Safety  
–
Thermal Regulation Loop Throttles Back  
Current to Limit Tj = 120°C  
The bq24170/172 charges the battery in three  
phases: precondictioning, constant current, and  
constant voltage. The bq24170 charges one, two, or  
three cells (selected by CELL pin), and the bq24172  
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  
–
Cycle-by-Cycle Current Limit  
offers  
a
safety back up. The bq24170/172  
•
Accuracy  
automatically restarts the charge cycle if the battery  
voltage falls below an internal threshold, and enters a  
low-quiescent current sleep mode when the input  
voltage falls below the battery voltage.  
–
–
–
±0.5% Charge Voltage Regulation  
±4% Charge Current Regulation  
±4% Input Current Regulation  
The  
bq24170/172  
features  
Dynamic  
Power  
•
•
•
Less than 15μA Battery Current with Adapter  
Removed  
Management (DPM) to reduce the charge current  
when the input power limit is reached to avoid  
over-loading the adapter.  
current-sense amplifier enables precise measurement  
of input current from adapter to monitor overall  
system power.  
Less than 1.5mA Input Current with Adapter  
Present and Charge Disabled  
A
highly-accurate  
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 © 2010–2011, Texas Instruments Incorporated  
 
 
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BQ24172RGYT 替代型号

型号 品牌 替代类型 描述 数据表
BQ24172RGYR TI

完全替代

 1.6-MHz Synchronous Switch-Mode Li-Ion and Li-Polymer Stand-Alone Battery Charger

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