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MCP73837/8 AC/USB Evaluation Board User’s Guide
1.2
WHAT IS THE MCP73837/8 AC/USB DUAL INPUT BATTERY CHARGER
EVALUATION BOARD?
The MCP73837/8 AC/USB Dual Input Battery Charger Evaluation Board demonstrates
the use of Single-Chip Linear Li-Ion Battery Charger with Autonomous AC-Adapter or
USB-Port Power Source Selection.
The MCP73837/8 AC/USB Dual Input Battery Charger Evaluation Board is set up to
evaluate single-cell Li-Ion Battery Charge Management. This board utilizes Microchip's
MCP73837 and MCP73838 (Li-Ion Battery Charge Management Controllers ) that
effectively charge Li-Ion batteries with + 0.5% high accuracy preset voltage regulation.
The MCP73837/8 AC/USB Dual Input Battery Charger Evaluation Board comes with
two pre-installed circuits: DFN-10 MCP73837 and MSOP-10 MCP73838. Both circuits
are ready to charge Li-Ion battery at a maximum charge current rate up to 1000 mA
when AC Adapter is present and a maximum charge current rate up to 500 mA when
USB-Port is present. A mechanical dip switch is built in to select High (maximum
500 mA) or Low (maximum 100 mA) for the USB-Port powered system.
Two built-in LEDs are ready to indicate charge status: STAT1 and STAT2. The
MCP73837 has a Power-Good Monitor that can be observed via the 3rd LED indicator
on the board.
Note:
Please refer to Table 2-1 for MCP73837/8 Charge Status Outputs.
The MCP73838 has Timer-Enable to active and disable the internal safety timer for
charge special applications which can be selected from TE test point pin.
The MCP73837/8 AC/USB Dual Input Battery Charger Evaluation Board is also
designed for easy modifications to support both MCP73837 in 10-pin DFN and MSOP
packages and MCP73838 in 10-pin DFN and MSOP packages. R PROG (R6 and R12)
are located in the open area for quick charge current programming.
The MCP73837/8 AC/USB Dual Input Battery Charger Evaluation Board is designed to
observe the performance and features on the circuits via multiple test points. Users can
also discover the compact size of the layout in addition to the device itself. The circuit
can also be implemented into suitable applications without additional work.
1.3
WHAT THE MCP73837/8 AC/USB DUAL INPUT BATTERY CHARGER
EVALUATION BOARD KIT INCLUDES
This MCP73837/8 AC/USB Dual Input Battery Charger Evaluation Board kit includes:
? MCP73837/8 AC/USB Dual Input Battery Charger Evaluation Board, 102-00120
? MCP73837 DFN-10 and MCP73838 MSOP-10 (Pre-Installed)
? Analog and Interface Products Demonstration Boards CD-ROM (DS21912)
- MCP73837/8 AC/USB Evaluation Board User ’s Guide, DS51684
DS51684A-page 6
? 2007 Microchip Technology Inc.
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