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Datasheet > LM3622MX-4.2
LM3622MX-4.2 PDF预览

LM3622MX-4.2

更新时间： 2024-11-04 20:34:19
品牌 Logo 应用领域
德州仪器 - TI 光电二极管
页数 文件大小 规格书
14页 894K
描述
BATTERY CHARGE CONTROLLER, PDSO8, SOIC-8

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LM3622MX-4.2 技术参数

生命周期：Obsolete零件包装代码：SOIC
包装说明：SOP,针数：8
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.66
其他特性：SEATED HGT-NOM模拟集成电路 - 其他类型：BATTERY CHARGE CONTROLLER
最大输入电压：24 V最小输入电压：4.5 V
标称输入电压：5 VJESD-30 代码：R-PDSO-G8
长度：4.9 mm功能数量：1
端子数量：8最高工作温度：70 °C
最低工作温度：-20 °C标称输出电压：4.2 V
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
座面最大高度：1.75 mm表面贴装：YES
切换器配置：SINGLE温度等级：OTHER
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL宽度：3.9 mm
Base Number Matches：1

LM3622MX-4.2 数据手册

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LM3622  
www.ti.com  
SNVS043B –FEBRUARY 2000–REVISED APRIL 2013  
LM3622 Lithium-Ion Battery Charger Controller  
Check for Samples: LM3622  
1
FEATURES  
DESCRIPTION  
The LM3622 is a charge controller for Lithium-Ion  
batteries. This monolithic integrated circuit accurately  
controls an external pass transistor for precision  
Lithium-Ion battery charging. The LM3622 provides a  
constant voltage or constant current (CVCC)  
configuration that changes, as necessary, to optimally  
charge lithium-ion battery cells. Voltage charging  
versions (4.1V, 4.2V, 8.2V, and 8.4V) are available  
for one or two cell battery packs and for coke or  
graphite anode battery chemistry.  
2
•
Versions for Charging of 1 Cell (4.1V or 4.2V)  
or 2 Cells (8.2V or 8.4V)  
•
•
•
•
•
Versions for Coke or Graphite Anode  
Precision (±30mV/Cell) End-of-Charge Control  
Wide Input Range: 4.5V-24V  
Low Battery Drain Leakage: 200nA  
15 mA Available to Drive Low Cost PNP  
APPLICATIONS  
The LM3622 accepts input voltages from 4.5V to  
24V. Controller accuracy over temperature is  
±30mV/cell for A grade and ±50mV/cell for the  
standard grade. No precision external resistors are  
required. Furthermore, the LM3622's proprietary  
output voltage sensing circuit drains less than 200nA  
from the battery when the input source is  
disconnected.  
•
•
•
Cellular Phone Cradle Charger  
PDA/Notebook Cradle Charger  
Camcorder Cradle Charger  
The LM3622 circuitry includes functions for regulating  
the charge voltage with a temperature compensated  
bandgap reference and regulating the current with an  
external sense resistor. The internal bandgap insures  
excellent controller performance over the operating  
temperature and input supply range.  
The LM3622 can sink 15mA minimum at the EXT pin  
to drive the base of an external PNP pass transistor.  
It also has low-voltage battery threshold circuitry that  
removes this drive when the cell voltage drops below  
a preset limit. The LVSEL pin programs this threshold  
voltage to either 2.7V/cell or 2.15V/cell. The low-  
voltage detection, which is a user enabled feature,  
provides an output signal that can be used to enable  
a
"wake up charge" source automatically to  
precondition a deeply discharged pack.  
The LM3622 is available in a standard 8-lead SOIC  
surface mount 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.  
2
All 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 © 2000–2013, Texas Instruments Incorporated  
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