MCP73861 Microchip Technology, Inc., MCP73861 Datasheet - Page 17

• Manufacturer Part Number: MCP73861
• Description: Advanced Single or Dual Cell, Fully Integrated Li-ion / Li-polymer Charge Management Controllersthe MCP7386X Family of Devices Are Highly Advancedlinear Charge Management Controllers For Use in Spacelimited,cost-sensitive Applications. The MCP73861 A
• Manufacturer: Microchip Technology, Inc.

6.0
The MCP7386X are designed to operate in conjunc-
tion with a host microcontroller or in stand-alone appli-
cations. The MCP7386X provides the preferred
charge algorithm for Lithium-Ion and Lithium-Polymer
FIGURE 6-1:
FIGURE 6-2:
 2004 Microchip Technology Inc.
APPLICATIONS
Regulation
Voltage
(V
Regulation
Current
(I
Transition
Threshold
(V
Precondition
Current
(I
Termination
Current
(I
REG
PREG
TERM
REG
PTH
Unregulated
Wall Cube
)
)
)
)
)
Typical Application Circuit.
Typical Charge Profile.
Preconditioning
Mode
Precondition
Safety Timer
V
V
V
V
SET
DD1
DD2
SS1
R
PROG
STAT1
PROG
Charge
Voltage
1
2
3
4
Constant Current
Mode
Fast Charge
Safety Timer
16
5
R
R
MCP73861
T1
T2
15
6
14
7
EN
cells, constant current followed by constant voltage.
Figure 6-1 depicts a typical stand-alone application
circuit
accompanying charge profile.
Elapsed Time
Termination Timer
13
8
TIMER
V
12
11
10
C
SS2
9
TIMER
V
V
V
V
BAT3
BAT2
BAT1
SS3
and
Charge
Current
Constant Voltage
Mode
Figures 6-2
MCP73861/2
+
-
Single
Lithium-Ion
Cell
and 6-3
DS21893A-page 17
depict
the