MCP73853IMF MICROCHIP [Microchip Technology], MCP73853IMF Datasheet - Page 15

• Manufacturer Part Number: MCP73853IMF
• Description: USB Compatible Li-Ion/Li-Polymer Charge Management Controllers
• Manufacturer: MICROCHIP [Microchip Technology]

6.0
The MCP7385X devices are designed to operate in
conjunction with a host microcontroller or in stand-
alone applications. The MCP7385X devices provide
the preferred charge algorithm for Li-Ion/Li-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
Regulated Wall Cube
REG
PREG
TERM
REG
PTH
USB Power Bus
)
)
)
)
)
or
Typical Application Circuit.
Typical Charge Profile.
Preconditioning
Mode
Precondition
Safety Timer
V
V
V
V
SET
DD1
DD2
SS1
Charge
Voltage
R
PROG
STAT1
Constant-current
Mode
PROG
Fast Charge
Safety Timer
1
2
3
4
16
5
R
R
MCP73853
T1
T2
15
6
14
7
cells, constant current followed by constant voltage.
Figure 6-1 depicts a typical stand-alone application
circuit, while Figures 6-2 and 6-3 depict the
accompanying charge profile.
Elapsed Time
Termination Timer
EN
13
8
TIMER
V
C
SS2
12
11
10
9
TIMER
V
V
V
V
Charge
Current
BAT3
BAT2
BAT1
SS3
Constant-voltage
Mode
MCP73853/55
+
-
Single
Lithium-Ion
Cell
DS21915A-page 15