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LP3947ISDX-51/NOPB PDF预览

LP3947ISDX-51/NOPB

更新时间： 2024-11-15 12:36:19
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德州仪器 - TI 电池
页数 文件大小 规格书
20页 836K
描述
LP3947 USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC

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中文翻译

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LP3947ISDX-51/NOPB 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：SON
包装说明：HVSON, SOLCC14,.16,20针数：14
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.69
其他特性：RESTART THRESHOLD VOLTAGE FOR 4.1V CELL IS 3.9V AND 4.2V CELL IS 4V可调阈值：YES
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：S-PDSO-N14
JESD-609代码：e3长度：4 mm
湿度敏感等级：1信道数量：1
功能数量：1端子数量：14
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装等效代码：SOLCC14,.16,20封装形状：SQUARE
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
电源：5 V认证状态：Not Qualified
座面最大高度：0.8 mm子类别：Power Management Circuits
最大供电电流 (Isup)：0.15 mA最大供电电压 (Vsup)：6 V
最小供电电压 (Vsup)：4.5 V标称供电电压 (Vsup)：5 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：4 mm
Base Number Matches：1

LP3947ISDX-51/NOPB 数据手册

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LP3947  
www.ti.com  
SNVS298B –NOVEMBER 2004–REVISED APRIL 2013  
LP3947 USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC  
Check for Samples: LP3947  
1
FEATURES  
DESCRIPTION  
The LP3947 is a complete charge management  
system that safely charges and maintains a Li-Ion  
battery from either USB power source or AC adaptor.  
In USB mode, the LP3947 supports charging in low  
power or high power mode. Alternatively, the LP3947  
can take charge from AC adaptor. In both USB and  
AC adaptor modes, charge current, battery regulation  
voltage, and End of Charge (EOC) point can be  
selected via I2C™ interface. The LP3947 can also  
operate on default values that are pre-programmed in  
the factory. The battery temperature is monitored  
continuously at the Ts pin to safeguard against  
hazardous charging conditions. The charger also has  
under-voltage and over-voltage protection as well as  
an internal 5.6 hr timer to protect the battery. The  
pass transistor and charge current sensing resistor  
are all integrated inside the LP3947.  
23  
•
Supports USB Charging Scheme  
Integrated Pass Transistor  
•
•
•
•
•
•
•
•
•
Near-Depleted Battery Preconditioning  
Monitors Battery Temperature  
Built-In 5.6 Hour Timer  
Under Voltage and Over Voltage Lockout  
Charge Status Indicators  
Charge Current Monitor Analog Output  
LDO Mode Operation can source 1 Amp  
Continuous Over Current/Temperature  
Protection  
APPLICATIONS  
•
•
•
•
•
Cellular Phones  
The LP3947 operates in four modes: pre-qualification,  
constant current, constant voltage and maintenance  
modes. There are two open drain outputs for status  
indication. An internal amplifier readily converts the  
charge current into a voltage. Also, the charger can  
operate in an LDO mode providing a maximum of 1.2  
Amp to the load.  
PDAs  
Digital Cameras  
USB Powered Devices  
Programmable Current Sources  
KEY SPECIFICATIONS  
•
1% Charger Voltage Accuracy Over  
0°C ≤ TJ ≤ 85°C  
•
•
4.3V to 6V Input Voltage Range  
100 mA to 750 mA Charge Current Range, in  
Charger Mode  
•
•
100 mA to 500 mA Charge Current Range, in  
USB Mode  
WSON Package Power Dissipation:  
2.7W at TA = 25°C  
TYPICAL APPLICATION CIRCUIT  
To  
System  
Supply  
CHG-IN  
1 mF  
BATT  
USB Power Source  
4.3V to 5.5V  
Li-Ion  
10 mF  
VB  
Sense  
R
T
T
S
LP3947  
CHG  
EOC  
R
S
V
T
Diff-Amp  
SCL  
SDA  
ISEL  
MODE  
GND  
EN  
More Application Circuit can be found in APPLICATION NOTES.  
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.  
I2C is a trademark of Philips Semiconductor Corporation.  
2
3
All other trademarks are the property of their respective owners.  
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 © 2004–2013, Texas Instruments Incorporated  
1234567...20

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LP3947ISDX-51/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LP3947ISD-51/NOPB TI

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 LP3947 USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC

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