MCP73826(2002) Просмотр технического описания (PDF) - Microchip Technology

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производитель

MCP73826
(Rev.:2002)

Single Cell Lithium-Ion Charge Management Controller

Microchip Technology 

MCP73826

6.0 APPLICATIONS

The MCP73826 is designed to operate in conjunction

with a host microcontroller or in stand-alone applica-

tions. The MCP73826 provides the preferred charge

VOLTAGE

REGULATED

WALL CUBE

MA2Q705

22 kΩ

10 µF

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.

Q1

RSENSE NDS8434

100 mΩ

IOUT

PACK+

10 µF

SHDN 1

6 VSNS

GND 2 MCP73826 5 VIN

+

100 kΩ

VBAT 3

4 VDRV

-

FIGURE 6-1: Typical Application Circuit.

PACK-

SINGLE CELL

LITHIUM-ION

BATTERY PACK

REGULATION

VOLTAGE

(VREG)

REGULATION

CURRENT

(IOUT(PEAK))

TRANSITION

THRESHOLD

PRECONDITIONING

PHASE

CONTROLLED CURRENT

PHASE

CHARGE

VOLTAGE

CONSTANT VOLTAGE

PHASE

PRECONDITION

CURRENT

CHARGE

CURRENT

FIGURE 6-2: Typical Charge Profile.

 2002 Microchip Technology Inc.

DS21705A-page 11

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