MCP1630 Low-Cost Battery Charger User’s Guide
DS51555A-page 6
©
2005 Microchip Technology Inc.
1.2
WHAT IS THE MCP1630 LOW-COST LI-ION BATTERY CHARGER?
The MCP1630 Low-Cost Li-Ion Battery Charger is a complete stand-alone constant
current, constant voltage battery charger for single-cell Li-Ion battery packs. Different
battery chemistries (i.e. three NiMh or NiCd batteries connected in series) can be
charged with minor modifications to the firmware. Multiple series cell Li-Ion battery
packs can be charged with minor modifications to the hardware.
This board utilizes Microchip’s MCP1630 (High-Speed PIC
®
MCU PWM MSOP8),
MCP6292 (DUAL OPAMP MSOP8), and PIC12F683 (Flash MCU SOIC8). The input
voltage range for the demo board is 6V to 18V. The output is capable of charging at a
fast charge rate of 2A contant current.
An input terminal block is provided to apply the input voltage to the charger. An output
header is also provided as a means to connect the external battery pack or simulated
battery load. A programming header is available for updating the firmware contained in
the PIC12F683.
1.3
WHAT THE MCP1630 LOW-COST LI-ION BATTERY CHARGER KIT
INCLUDES
This MCP1630 Low-Cost Li-Ion Battery Charger Kit includes:
• The MCP1630 Low-Cost Li-Ion Battery Charger Board,102-00069
• MCP1630 Low-Cost Li-Ion Battery Charger User’s Guide, DS51555A.
• MCP1630 Data Sheet, “High-Speed, Microcontroller-Adaptable, Pulse Width
Modulator”, DS21896.
• MCP6291/2/3/4/5 Data Sheet, “1.0 mA, 10 MHz, Rail-to-Rail Op Amp”, DS21812.
• PIC12F683 Data Sheet, “8-Pin Flash-Based, 8-Bit CMOS Microcontrollers with
nanoWatt™ Technology”, DS41211.
