MCP73871DM-VPCC - 

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 1.5 A total current to system load and to a single cell Li-Ion battery at 4.2 V preset voltage regulation (4.1 V, 4.35 V and 4.4 V 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 3.2 V 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: 4.2 V ±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: 1 A

Resistor programmed termination set point: 100 mA

Automatic Charge Termination

Automatic Recharge

Internal Thermal Regulation