Datasheet

© 2009 Microchip Technology Inc. DS22190B-page 21
MCP73213
6.0 APPLICATIONS
The MCP73213 is designed to operate in conjunction
with a host microcontroller or in stand-alone
applications. The MCP73213 provides the preferred
charge algorithm for dual Lithium-Ion or
Lithium-Polymer cells Constant-current followed by
Constant-voltage. Figure 6-1 depicts a typical
stand-alone application circuit, while Figure 6-2
depicts the accompanying charge profile.
FIGURE 6-1: Typical Application Circuit.
FIGURE 6-2: Typical Charge Profile
(875 mAh Li-Ion Battery).
V
DD
5
3
1
2
8
7
R
PROG
9
10
C
IN
C
OUT
R
LED
+
-
2-Cell
Li-Ion
Battery
6
4
MCP73213 Typical Application
V
DD
STAT
NC
NC
V
BAT
V
BAT
PROG
V
SS
V
SS
Ac-dc-Adapter
0
1
2
3
4
5
6
7
8
9
10
0 102030405060708090
Time (Minutes)
Battery Voltage (V)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
Supply Current (A)
V
DD
= 9V
R
PROG
= 1.5 kΩ
875 mAh Li-Ion Battery
Thermal Foldback