MCP73871DM-VPCC MCP73871 Demo Board with Voltage Proportional Current Control

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.

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

Documentation & Software

AppNotes	Last Updated	Size
AN1260 - Li-Ion/Li-Poly Battery Charge and System Load Sharing Management Design Guide With MCP73871	6/10/2011 1:33:53 PM	235KB
MCP73871 Data Sheet (English)	9/9/2013 8:56:59 AM	1MB
MCP73871 Demo Board with VPCC User's Guide	11/17/2009 8:58:20 AM	366KB
MCP73871 Demo Board with VPCC Gerbers	6/16/2009 2:15:39 PM	115KB