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参数资料
| 型号： | LM3622-4.2MDC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | BATTERY CHARGE CONTROLLER, UUC |
| 封装： | DIE |
| 文件页数： | 4/13页 |
| 文件大小： | 253K |
| 代理商： | LM3622-4.2MDC |
National P/N LM3622 - Lithium-Ion Battery Charger Controller
LM3622A-4.2
MDC
Full
production
N/A
N/A Samples
tray
of
N/A
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LM3622A-8.4
MDC
Full
production
N/A
N/A Samples
tray
of
N/A
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LM3622-4.1
MWC
Full
production
N/A
wafer
jar
of
N/A
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LM3622-4.2
MWC
Full
production
N/A
wafer
jar
of
N/A
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LM3622-8.2
MWC
Full
production
N/A
wafer
jar
of
N/A
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LM3622-8.4
MWC
Full
production
N/A
wafer
jar
of
N/A
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LM3622A-4.1
MWC
Full
production
N/A
wafer
jar
of
N/A
-
LM3622A-4.2
MWC
Full
production
N/A
wafer
jar
of
N/A
-
LM3622A-8.4
MWC
Full
production
N/A
wafer
jar
of
N/A
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General 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.
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.
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.
file:///H|/imaging/BITTING/cpl/20020808_1/08062002_10/NATL/08062002_HTML/LM3622.html (3 of 4) [09-Aug-2002 2:16:02 PM]
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM3622AM-4.1 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Lithium-Ion Battery Charger Controller |
| LM3622AM-4.1/NOPB | 功能描述:IC CTRLR LI-ION BAT CHRG 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:1 系列:- 功能:充电管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
| LM3622AM-4.2 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Lithium-Ion Battery Charger Controller |
| LM3622AM-4.2/NOPB | 功能描述:IC CTRLR LI-ION BAT CHRG 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:1 系列:- 功能:充电管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
| LM3622AM-8.1 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Battery Management |
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