Datasheet

MCP73871 EVALUATION BOARD
USERS GUIDE
© 2008 Microchip Technology Inc. DS51755A-page 5
Chapter 1. Product Overview
1.1 INTRODUCTION
Space and complexity are two key concerns in portable electronic design. The highly
integrated MCP73871 device has overcome the hurdles by including the required ele-
ments to meet the design challenges when developing new Li-Ion / Li-Polymer battery
powered products.
The MCP73871 requires minimum external components to power the system load and
charge single cell Li-Ion batteries independently. When input power is absent or
insufficient, the Li-Ion battery becomes the primary power source or in help mode to
support the required system load current. The MCP73871 Evaluation Board is
developed to assist product designers in reducing product design cycle and time by
utilizing Microchip’s favorite stand-alone Li-Ion battery charger and system load
sharing management controller.
This chapter provides an overview of the MCP73871 Evaluation Boardand covers the
following topics:
“What is the MCP73871 Evaluation Board?”
“What the MCP73871 Evaluation Board Kit includes”
FIGURE 1-1: MCP73871 With System Power Path Management Application.
STAT1
LBO
IN OUT
P
G
V
BAT
Single-Cell
Li-Ion Battery
7
MCP73871 Typical Application
1, 20
8
18, 19
10 µF
10, 11, EP
Ac-dc Adapter
or
USB Port
STAT2
THERM
V
SS
PROG1
PROG3
12
13
R
PROG1
6
5
14, 15, 16
470Ω
470Ω
470Ω
2
4.7 µF
System
Load
SEL
T
E
PROG2
Hi
Low
Hi
Low
Hi
Low
3
4
9
R
PROG3
VPCC
NTC
10 kΩ
Hi
Low
17
CE
4.7 µF