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MCP73837-AMI/MF Datasheet(PDF) 20 Page - Microchip Technology

Part # MCP73837-AMI/MF
Description  Advanced Stand-Alone Li-Ion/Li-Polymer Battery Charge Management Controller with Autonomous AC Adapter or USB Port Source Selection
PDF  36 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP73837-AMI/MF Datasheet(HTML) 20 Page - Microchip Technology

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MCP73837/8
DS20002071C-page 20
 2007-2015 Microchip Technology Inc.
6.0
APPLICATIONS
The MCP73837/8 devices are designed to operate in
conjunction with a host microcontroller or in
stand-alone applications. The MCP73837/8 devices
provide the preferred charge algorithm for Lithium-Ion
and Lithium-Polymer cells, Constant-Current followed
by Constant-Voltage. Figure 6-1 depicts a typical
stand-alone MCP73837 application circuit, while
Figure 6-2 and Figure 6-3 depict the accompanying
charge profile.
FIGURE 6-1:
MCP73837 Typical Stand-Alone Application Circuit.
FIGURE 6-2:
Typical Charge Profile
(1200 mAh Li-Ion Battery).
FIGURE 6-3:
Typical Charge Profile in
Thermal Regulation (1200 mAh Li-Ion Battery).
STAT1
V
AC
V
SS
/PG
V
BAT
Single
Li-Ion
Cell
4
MCP73837
5
3
1
2
STAT2
THERM
V
USB
PROG1
PROG2
USB Port
6
7
Hi
Low
Thermistor
R
PROG
8
9
10
1

1

1

REGULATED
WALL CUBE
C
IN1
C
IN2
C
OUT
0.0
1.0
2.0
3.0
4.0
5.0
Time (Minutes)
0
0.2
0.4
0.6
0.8
1
1.2
VDD = 5.2V
RPROG = 1 kΩ
1200 mAh Li-Ion Battery
IOUT
VOUT
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0123456789
10
Time (Minutes)
0
0.3
0.6
0.9
1.2
VDD = 5.2V
RPROG = 1 kΩ
1200 mAh Li-Ion Battery
VOUT
IOUT



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