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LTC4062

具微功率比较器的独立型线性锂离子电池充电器

LTC4062产品信息:

概览

优势和特点

  • Charge Current Programmable up to 1A
  • Charges Single Cell Li-Ion Batteries Directly from USB Port
  • Preset Float Voltage with ±0.35% Accuracy
  • Micropower Comparator for Battery Monitoring
  • Thermal Regulation Maximizes Charge Rate Without Risk of Overheating*
  • Programmable Charge Current Detection/Termination
  • Programmable Charge Termination Timer
  • Smart Pulsing Error Feature
  • SmartStart(TM) Prolongs Battery Life
  • 20µA Charger Quiescent Current in Shutdown
  • Available in a Low Profile (0.75mm) 10-Lead
    (3mm × 3mm) DFN Package

产品详情

The LTC( )4062 is a full-featured, flexible, standalone linear charger for single-cell Lithium-Ion batteries. It is capable of operating within USB power specifications.

Both programmable time and programmable current based termination schemes are available. Furthermore, the CHRG open-drain status pin can be programmed to indicate the battery charge state according to the needs of the application. A precise low power comparator is available even with no power applied as long as battery voltage is higher than 2.5V. Additional safety features designed to maximize battery lifetime and reliability include the SmartStart charging algorithm.

No external sense resistor or external blocking diode is required for charging due to the internal MOSFET architecture. Internal thermal feedback regulates the charge current to maintain a constant die temperature during high power operation or high ambient temperature conditions. The charge current is programmed with an external resistor. With power applied, the LTC4062 can be put into shutdown mode to reduce the supply current to 20µA and the battery drain current to less than 5µA. Without power applied, the internal low power comparator can work sinking only 10µA from the battery.

Other features include smart recharge, USB C/5 current programming input and undervoltage lockout.

*Protected by U.S. Patents, including 6522118.


应用
  • Handheld Computers
  • Portable MP3 Players
  • Digital Cameras

LTC4062数据手册:

LTC4062引脚功能、电路图:

LTC4062

【用 途】 线性锂离子电池充电器【性能 参数】 采用10管脚小尺寸DFN封装(3mm×3mm),高度0.75mm;工作温度范围为0℃~+85℃。 特点:可以用插头式(AC/DC适配器)或USB端口供电;最大充电电流可达1A;预设浮充电压为4.2V±0.35%;内有用

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凌特推出独立锂离子电池充电器

凌特公司(LinearTechnology)推出集成了微功率比较器的紧凑型独立线性单节锂离子电池充电器LTC4062。在安全性方面,LTC4062具有可调节的充电终止计时器和防止电池过冲电的精确浮动电压。为消除过热风险的同时以最高速度充电,获得专利的热调节电路可保持LTC4062的结温处于安全水平。

锂离子电池充电器LTC4062及其应用

方佩敏近年来,手机、数码相机、MP3等便携式产品向体积小、厚度薄、重量轻方向发展,新产品推陈出新,产量也猛增。这些新产品中无不采用锂离子(或聚合物)电池,因为它能满足小、薄、轻的要求,并且容量大,能延长两次充电的时间间隔。与此同时,各厂商也开发出各种新型充电器,与产品进行配套销售。为争夺充电器市场的份额,各导体厂商开发许多性能优良、设计灵活、应用方便的充电器芯片,应用到各种新型充电器当中。凌特公司推出

锂离子电池充电器LTC4062及其应用方案

近年来,手机、数码相机、MP3等便携式产品向体积小、厚度薄、重量轻方向发展,新产品推陈出新,产量也猛增。这些新产品中无不采用锂离子(或聚合物)电池,因为它能满足小、薄、轻的要求,并且容量大,能延长两次充电的时间间隔。与此同时,各厂商也开发出各种新型充电器,与产品进行配套销售。为争夺充电器市场的份额,各导体厂商开发许多性能优良、设计灵活、应用方便的充电器芯片,应用到各种新型充电器当中。凌特公司推出的

锂离子电池充电器LTC4062及其应用方案_电源技术

近年来,手机、数码相机、MP3等便携式产品向体积小、厚度薄、重量轻方向发展,新产品推陈出新,产量也猛增。这些新产品中无不采用锂离子(或聚合物)电池,因为它能满足小、薄、轻的要求,并且容量大,能延长两次充电的时间间隔。与此同时,各厂商也开发出各种新型充电器,与产品进行配套销售。为争夺充电器市场的份额,各导体厂商开发许多性能优良、设计灵活、应用方便的充电器芯片,应用到各种新型充电器当中。凌特公司推出的

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