Microchip Technology MCP73855, User Manual

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MCP73855 EVALUATION
BOARD USER’S GUIDE

2004 Microchip Technology Inc. DS51522A-page 7
Chapter 2. MCP73855 Evaluation Board Installation
2.1 FEATURES
The MCP73855 Evaluation Board has the following features:
• Evaluation of the MCP73855 USB Compatible Li-Ion/Li-Polymer Charge
Management Controller in a 3mm x 3mm, 10-Lead DFN Package
• Simple, stand-alone operation or microcontroller-compatible
• Powered from external bench supply, wall cube or USB port
• Surface-mount design
• Fully assembled and tested
2.2 GETTING STARTED
The MCP73855 Evaluation Board is a fully-functional, assembled and tested, sur-
face-mount board used for evaluation of Microchip’s MCP73855 USB Compatible
Li-Ion/Li-Polymer Charge Management Controller. The following steps provide simple,
stand-alone operation. Refer to Figure 2-1 for the setup configuration diagram. The
setup configuration diagram depicts evaluation of the installed MCP73855 for
single-cell applications.
1. Connect an external bench supply, wall cube or USB port to the surface-mount
test points provided. The input voltage source should be in the range of 4.5V to
5.5V. Refer to Section 2.3.1 “Input Source” for details on the input source
requirements.
2. Connect a single-cell Li-Ion or Li-Polymer battery pack to the circuit for
evaluation.
3. Turn on the bench supply or plug in the wall cube/USB port.
4. A green LED (D
1
) provides status during the charge cycle. Refer to the
MCP73853/55 data sheet (DS21915) for details.
Note: Observe correct polarity of connection. Positive terminal
connects to J2, V
IN
+; negative terminal connects to J3, V
IN
-.
Note: Observe correct polarity of connection. Positive terminal con-
nects to J5, V
BAT
+; negative terminal connects to J6, V
BAT
-.