MCP73844 Microchip Technology, MCP73844 Datasheet - Page 15

• Manufacturer Part Number: MCP73844
• Description: (MCP73841 - MCP73844) Advanced Single or Dual Cell Lithium-Ion/ Lithium-Polymer Charge Management Controllers
• Manufacturer: Microchip Technology

6.0
The MCP7384X is designed to operate in conjunction
with either a host microcontroller or in stand-alone
applications. The MCP7384X provides the preferred
charge algorithm for Lithium-Ion and Lithium-Polymer
FIGURE 6-1:
FIGURE 6-2:
2004 Microchip Technology Inc.
Voltage
Regulated
Wall Cube
Precondition Current
Transition Threshold
Termination Current
Regulation Voltage
Regulation Current
APPLICATIONS
(I
(I
(V
(V
(I
PREG
TERM
REG
REG
PTH
Typical Application Circuit.
Typical Charge Profile.
Optional
Reverse
Blocking
Diode
)
)
)
)
)
Preconditioning
Phase
Precondition
Safety Timer
R
T2
R
R
SENSE
T1
Constant-Current
Phase
SENSE
THREF
STAT1
Safety Timer
Fast Charge
V
EN
DD
Voltage
Charge
1
2
4
5
3
MCP73841
Termination Timer
cells: constant-current followed by constant-voltage.
Figure 6-1 depicts a typical stand-alone application
circuit, while Figure 6-2 depicts the accompanying
charge profile.
Elapsed Time
Constant-Voltage
Phase
Current
Charge
10
MCP73841/2/3/4
8
7
6
9
DRV
V
V
TIMER
THERM
BAT
SS
Q
1
C
TIMER
DS21823B-page 15
Battery
Pack
+
-