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MCP7384X Eval Kit User’s Guide
+ Single
UNREGULATED
-
Lithium-Ion
Cell
CIRCUIT 1
WALL CUBE
CIRCUIT 2
CIRCUIT 3
FIGURE 2-1:
Set-up Configuration Diagram.
2.3
DETAILED DESCRIPTION
The MCP7384X Evaluation Board is designed to evaluate simple, stand-alone, linear
charging of single or dual cell Lithium-Ion/Lithium-Polymer battery packs. Two single
cell reference designs and one dual cell reference design are provided. Each reference
design can be evaluated independently and utilizes a different pass transistor, each in
a unique package, to demonstrate the versatility of the MCP7384X charge
management controllers. The reference designs provide constant current charging
followed by constant voltage charging with automatic charge termination. Three levels
of constant current, one for each reference design, are demonstrated: 500 mA, 1A and
275 mA for the two single cell reference designs and the dual cell reference design,
respectively. The MCP73841 is provided in a 10-pin MSOP package and is equipped
with shutdown control, status indicator, safety timer, and continuous cell temperature
monitor. The MCP73842 is provided in a 10-pin MSOP package and is equipped with
the same features as the MCP73841. The MCP73841 and MCP73842 provide charge
management for single and dual cell Lithium-Ion/Lithium-Polymer battery packs,
respectively. Alternatively, the MCP73843 is provided in an 8-pin MSOP package. The
MCP73843 provides charge management for single cell Lithium-Ion/Lithium-Polymer
battery packs. The MCP73843 is equipped with all the features of the MCP73841 and
MCP73842, with the exception of the cell temperature monitor. Refer to the MCP7384X
data sheet (DS21823) for details on the individual device features.
DS51424A-page 4
? 2003 Microchip Technology Inc.
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