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  • 上海南麟电子有限公司
  • 化工币: 105
  • 诚信指数:21   诚信等级:诚信等级:二星半级
  • 荣誉证书:0 项
  • 联系人:
  • 电话:86 021 50275853-8023   15800731464
  • 邮箱:
  • 公司地址:中国 上海市浦东新区 松涛路489号
  • (联系时,请一定说明是从全球石油化工网看到的)
  • 最近供应 | 诚信档案 | 企业介绍
该公司还有2条同类“线性IC”供应商机
详细信息
 封装:   模拟信号  型号:   现货
 批号:   半导体集成  静态功耗:   南麟 natlinear (mW)
 规格尺寸:   -40~85 (mm)  工作温度:   DFN1.8X2-6L (℃)
 导电类型:   新品  集成程度:   小规模
 制作工艺:   LN2055  厂家:   0000

■DESCRIPTIONThe LN2055 is a complete constant-current/constant-voltage linear charger for single cell lithium-ion batteries. Its DFN package and low external component count make the LN2055 ideally suited for portable applications. Furthermore, the LN2055 is specifically designed to work within USB power specifications.No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor. The LN2055 automatically terminates the charge cycle when the charge current drops to 1/10ththe programmed value after the final float voltage is reached.The internal hot swap circuit can protected the circuit from damage when the adapter or USB plug-in-out. When the input supply (wall adapter or USB supply) is removed, the LN2055 automatically enters a low current state, dropping the battery drain current to less than 2mA. The LN2055 can be put into shutdown mode, reducing the supply current to 25mA.Other features include charge current monitor, under-voltage lockout, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage.■FEATURES l Programmable Charge Current Up to 600mAl No MOSFET, Sense Resistor or Blocking Diode Requiredl Complete Linear Charger in DFN Package for single Cell Lithium-Ion Batteriesl Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheatingl Charges Single Cell Li-Ion Batteries Directly from USB Portl Preset 4.2V Charge Voltage with±1% Accuracyl Charge Current Monitor Output for Gas Gaugingl Automatic Rechargel Charge Status Output Pinl Hot swap protected■DESCRIPTIONThe LN2055 is a complete constant-current/constant-voltage linear charger for single cell lithium-ion batteries. Its DFN package and low external component count make the LN2055 ideally suited for portable applications. Furthermore, the LN2055 is specifically designed to work within USB power specifications.No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor. The LN2055 automatically terminates the charge cycle when the charge current drops to 1/10ththe programmed value after the final float voltage is reached.The internal hot swap circuit can protected the circuit from damage when the adapter or USB plug-in-out. When the input supply (wall adapter or USB supply) is removed, the LN2055 automatically enters a low current state, dropping the battery drain current to less than 2mA. The LN2055 can be put into shutdown mode, reducing the supply current to 25mA.Other features include charge current monitor, under-voltage lockout, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage.■FEATURES l Programmable Charge Current Up to 600mAl No MOSFET, Sense Resistor or Blocking Diode Requiredl Complete Linear Charger in DFN Package for single Cell Lithium-Ion Batteriesl Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheatingl Charges Single Cell Li-Ion Batteries Directly from USB Portl Preset 4.2V Charge Voltage with±1% Accuracyl Charge Current Monitor Output for Gas Gaugingl Automatic Rechargel Charge Status Output Pinl Hot swap protectedl C/10 Charge Terminationl 25mA Supply Current in Shutdownl 2.9V Trickle Charge Threshold (LN2055)l Soft-Start Limits Inrush Current ■APPLICATIONS l Cellular Telephones, PDAs, MP3 Playersl Charging Docks and Cradlesl Bluetooth Applications■PACKAGE l DFN1.8X2-6Ll C/10 Charge Terminationl 25mA Supply Current in Shutdownl 2.9V Trickle Charge Threshold (LN2055)l Soft-Start Limits Inrush Current ■APPLICATIONS l Cellular Telephones, PDAs, MP3 Playersl Charging Docks and Cradlesl Bluetooth Applications■PACKAGE l DFN1.8X2-6L 
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