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MCP73123-22S/MF Datasheet(PDF) 15 Page - Microchip Technology

Part # MCP73123-22S/MF
Description  Lithium Iron Phosphate (LiFePO4) Battery Charge Management Controller with Input Overvoltage Protection
PDF  28 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP73123-22S/MF Datasheet(HTML) 15 Page - Microchip Technology

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 2009-2013 Microchip Technology Inc.
DS22191E-page 15
MCP73123/223
6.0
APPLICATIONS
The MCP73123/223 is designed to operate with a
host microcontroller or in stand-alone applications.
The MCP73123/223 provides the preferred charge
algorithm for lithium iron phosphate cells, Constant
Current mode followed by Constant Voltage mode.
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 for
Single-Cell LiFePO4 Battery.
STAT
VDD
NC
5
3
1
2
PROG
8
7
9
10
4.7 µF
+
-
1-Cell
LiFePO4
Battery
NC
6
4
1k
VDD
VBAT
VBAT
VSS
VSS
4.7 µF
1.0 k
MCP73123 Typical Application
AC-DC Adapter
5V DC Output
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
0
1020
30
4050
60
70
Time (Minutes)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
VDD = 5V
RPROG = 1 kΩ
1100 mAh LiFePO4 Battery
Thermal Regulation



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