MCP73871演示板

GY@艳

MCP73871演示板与电压成比例的电流控制旨在演示Microchip的独立线性锂离子电池充电器与系统电源路径和负载均衡管理控制解决方案。该MCP73871集成了所需的元素开发新的锂离子/锂聚合物电池供电的产品时，以满足设计挑战。The MCP73871 Demo Board with Voltage Proportional Current Control is designed to demonstrate Microchip's stand-alone linear Li-Ion battery charger with system power path and load sharing management control solution. The MCP73871 integrates the required elements to meet design challenges when developing new Li-Ion / Li-Polymer batteries powered products.The MCP73871 Demo Board with Voltage Proportional Current Control is designed to deliver minimum 1.5A total current to system load and to a single cell Li-Ion battery at 4.2V preset voltage regulation (4.1V, 4.35V and 4.4V options are also available for MCP73871). The board has a dip switch helping to decides the input power source between AC-DC wall adapter and USB port (AC/USB) and control input current limits, enable charge timer and enable charging.The MCP73871 Demo Board with Voltage Proportional Current Control comes with a factory preset low-battery indicator (LBO) when input is absent. The preset value is 3.2V and STAT1 LED (green) with turn ON if the battery voltage is below the threshold voltage. Features：

       

• Integrated System Load Sharing       
  
• Input Current Limit Control hardware selected (typical 1650 mA, USB-High       
  
• Three LEDs to indicate charge status, low battery and power good signal       
  
• Preset Li-Ion battery charge voltage: 4.2V ± 0.5%       
  
• Temperature monitoring (is disabled by default)       
  
• Factory preset 0.1C preconditioning current of deeply depleted cells       
  
• Factory preset Safety Timer with Timer Enable feature       
  
• Constant Current/Constant Voltage (CC/CV) charge algorithm       
  
• Resistor programmed maximum charge current: 1A       
  
• Resistor programmed termination set point: 100 mA       
  
• Automatic Charge Termination       
  
• Automatic Recharge       
  
• Internal Thermal Regulation