MCP73871-2AAI/SS Microchip Technology, MCP73871-2AAI/SS Datasheet - Page 22

• Manufacturer Part Number: MCP73871-2AAI/SS
• Description: USB/AC Battery Charger With Power Path Management 20 SSOP .209in TUBE
• Manufacturer: Microchip Technology

Specifications of MCP73871-2AAI/SS

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

MCP73871
6.0
The MCP73871 device is designed to operate in
conjunction with a host microcontroller or in stand-
alone applications. The MCP73871 device provides
the preferred charge algorithm for Lithium-Ion and
FIGURE 6-1:
FIGURE 6-2:
(1000 mAh Battery).
DS22090A-page 22
5V AC-DC Adapter
10 µF
4.5
3.5
2.5
1.5
0.5
4
3
2
1
0
APPLICATIONS
USB Port
0
330 kΩ
110 kΩ
or
10
20
Time (Minute)
30
MCP73871Typical Stand-Alone Application Circuit with VPCC.
Typical Charge Profile
Low
Low
Low
Low
40
Hi
Hi
Hi
Hi
50
MCP73871
V
R
R
470Ω
470Ω
470Ω
DD
PROG1
PROG3
60
= 5.2V
18, 19
= 1 k
= 25 k
70
17
6
7
8
2
3
4
9
MCP73871 Device Typical Application
80
IN
PG
STAT2
STAT1
LBO
VPCC
SEL
PROG2
TE
CE
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
Lithium-Polymer cells Constant-current followed by
Constant-voltage.
alone MCP73871 application circuit, while
2
FIGURE 6-3:
Preconditioning (1000 mAh Battery).
THERM
PROG1
PROG3
and
V
OUT
V
BAT
SS
4.5
3.5
2.5
1.5
0.5
6-3
4
3
2
1
0
0
Preconditioning
1, 20
14, 15, 16
5
13
12
10, 11, EP
depict the accompanying charge profile.
R
R
10 kΩ
PROG1
NTC
PROG3
0.2
4.7 µF
4.7 µF
Figure 6-1
Time (Minute)
0.4
Typical Charge Profile in
Preconditioning Threshold Voltage
© 2008 Microchip Technology Inc.
Fast Charge (Constant Current)
0.6
depicts a typical stand-
MCP73871
V
R
R
DD
PROG1
PROG3
= 5.2V
0.8
= 1 k
= 25 k
System
Load
Single-Cell
Li-Ion Battery
Figures 6-
1
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0