Datasheet

LI-ION SYSTEM PPM
REFERENCE DESIGN
© 2008 Microchip Technology Inc. DS51746A-page 5
Chapter 1. Product Overview
1.1 INTRODUCTION
Portable electronics has played an important role in modern era. Due to the natural
characteristics of Li-Ion / Li-Polymer batteries, they are the most popular power
sources for mobile devices. However, extra care in design is always important to
implement Li-Ion / Li-Polymer batteries. System Power Path Management allows
end-users to charge their batteries without interruption. This reference design is
developed to assist product designers in reducing product design cycle and time by
utilizing Microchip’s favorite stand-alone Li-Ion battery charge management controllers
with system power path management.
This chapter provides an overview of the Li-Ion Battery Charger System Power Path
Management Reference Designand covers the following topics:
• “What is the Li-Ion Battery Charger System Power Path Management Reference
Design?”
• “What the Li-Ion Battery Charger System Power Path Management Reference
Design Kit includes.
”
FIGURE 1-1: MCP73833 With System Power Path Management Application.
STAT1
V
DD
V
SS
/PG
V
BAT
4
MCP73833
5
3
1
2
STAT2
THERM
V
DD
PROG
6
8
R
PROG
7
10
C
IN
C
OUT
R
LED1
R
LED2
R
LED3
+
-
Li-Ion
Cell
System
Load
D1
Q1R
PULL
Thermistor
9
V
IN