MCP73871-2CAI/ML Microchip Technology, MCP73871-2CAI/ML Datasheet - Page 25

• Manufacturer Part Number: MCP73871-2CAI/ML
• Description: IC USB/AC BATT CHRGR W/PPM 20QFN
• Manufacturer: Microchip Technology

Specifications of MCP73871-2CAI/ML

• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Function: Charge Management
• Voltage - Supply: 4.4 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-VFQFN Exposed Pad
• Input Voltage: 6V
• Battery Charge Voltage: 4.5V
• Charge Current Max: 1A
• Battery Ic Case Style: QFN
• No. Of Pins: 20
• No. Of Series Cells: 1
• Product: Charge Management
• Output Voltage: 4.2 V
• Output Current: 50 mA to 1000 mA
• Operating Supply Voltage: 4.5 V to 6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP73871DM-VPCC - DEMO BOARD FOR MCP73871MCP73871EV - EVALUATION BOARD FOR MCP73871
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

6.0
The MCP73871 device is designed to operate in
conjunction
stand-alone applications. The MCP73871 device
provides the preferred charge algorithm for Lithium-Ion
FIGURE 6-1:
FIGURE 6-2:
(1000 mAh Battery).
© 2009 Microchip Technology Inc.
5V AC-DC Adapter
10 µF
4.5
3.5
2.5
1.5
0.5
4
3
2
1
0
USB Port
APPLICATIONS
0
330 kΩ
110 kΩ
or
10
with
20
a
Time (Minute)
30
MCP73871Typical Stand-Alone Application Circuit with VPCC.
Typical Charge Profile
host
Low
Low
Low
Low
40
Hi
Hi
Hi
Hi
microcontroller
50
470Ω
470Ω
470Ω
MCP73871
V
R
R
DD
PROG1
PROG3
60
18, 19
= 5.2V
= 1 kΩ
= 25 kΩ
17
70
6
7
8
2
3
4
9
MCP73871 Device Typical Application
IN
PG
STAT2
STAT1
LBO
VPCC
SEL
PROG2
TE
CE
80
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
or
in
and Lithium-Polymer cells Constant-current followed
by Constant-voltage.
stand-alone MCP73871 application circuit, while
Figures 6-2
profile.
FIGURE 6-3:
Preconditioning (1000 mAh Battery).
THERM
PROG1
PROG3
V
OUT
V
BAT
SS
4.5
3.5
2.5
1.5
0.5
4
3
2
1
0
0
1, 20
14, 15, 16
5
13
12
10, 11, EP
Preconditioning
and
R
R
10 kΩ
PROG1
NTC
PROG3
0.2
4.7 µF
4.7 µF
6-3
depict the accompanying charge
Time (Minute)
0.4
Typical Charge Profile in
Preconditioning Threshold Voltage
Figure 6-1
Fast Charge (Constant Current)
MCP73871
0.6
MCP73871
V
R
R
DD
PROG1
PROG3
depicts a typical
= 5.2V
DS22090B-page 25
0.8
System
Load
= 1 kΩ
= 25 kΩ
Single-Cell
Li-Ion Battery
1
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0