MCP73828-4.1VUA Просмотр технического описания (PDF) - Microchip Technology

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MCP73828-4.1VUA

Single Cell Lithium-Ion Charge Management Controller with Charge Complete Indicator and Temperature Monitor

Microchip Technology 

MCP73828

6.0 APPLICATIONS

The MCP73828 is designed to operate in conjunction

with a host microcontroller or in stand-alone applica-

tions. The MCP73828 provides the preferred charge

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.

MA2Q705

22 kΩ

10 µF 332 Ω

Q1

RSENSE NDS8434

100 mΩ

IOUT

PACK+

10 µF

VOLTAGE

REGULATED

WALL CUBE

SHDN 1

8 VIN

GND 2

7 VSNS

+

THERM 3

MCP73828

VDRV

6

-

100 kΩ

RS

CD10 4

5 VBAT

RP

PACK-

RTHERMISTOR

FIGURE 6-1: Typical Application Circuit.

TEMP

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 COMPLETE

CURRENT

(10% IOUT(PEAK))

5V

CD10 - CHARGE

COMPLETE OUTPUT

0V

FIGURE 6-2: Typical Charge Profile.

CHARGE

CURRENT

 2002 Microchip Technology Inc.

DS21706A-page 11

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