MCP73826 Microchip Technology, MCP73826 Datasheet - Page 11

• Manufacturer Part Number: MCP73826
• Description: Single Cell Lithium-Ion Charge Management Controller
• Manufacturer: Microchip Technology

6.0
The MCP73826 is designed to operate in conjunction
with a host microcontroller or in stand-alone applica-
tions. The MCP73826 provides the preferred charge
FIGURE 6-1:
FIGURE 6-2:
REGULATED
2002 Microchip Technology Inc.
WALL CUBE
VOLTAGE
REGULATION
VOLTAGE
(V
REGULATION
CURRENT
(I
TRANSITION
THRESHOLD
PRECONDITION
CURRENT
OUT
REG
(
PEAK
APPLICATIONS
)
)
)
Typical Application Circuit.
Typical Charge Profile.
MA2Q705
PRECONDITIONING
22 k
100 k
PHASE
10 µF
SHDN
GND
V
BAT
CHARGE
VOLTAGE
CONTROLLED CURRENT
1
2
3
MCP73826
PHASE
6
5
4
V
V
V
algorithm for Lithium-Ion cells, controlled current fol-
lowed by constant voltage. Figure 6-1 depicts a typical
stand-alone application circuit and Figure 6-2 depicts
the accompanying charge profile.
SNS
IN
DRV
R
100 m
SENSE
CURRENT
CHARGE
NDS8434
Q
CONSTANT VOLTAGE
1
PHASE
I
OUT
MCP73826
10 µF
PACK+
PACK-
DS21705A-page 11
BATTERY PACK
SINGLE CELL
LITHIUM-ION
+
-