MCP73827-4.1VUATR Просмотр технического описания (PDF) - Microchip Technology

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MCP73827-4.1VUATR

Single Cell Lithium-Ion Charge Management Controller with Mode Indicator and Charge Current Monitor

Microchip Technology 

MCP73827

6.0 APPLICATIONS

The MCP73827 is designed to operate in conjunction

with a host microcontroller or in stand-alone applica-

tions. The MCP73827 provides the preferred charge

algorithm for Lithium-Ion cells, controlled current fol-

VOLTAGE

REGULATED

WALL CUBE

MA2Q705

10 µF

22 kΩ

332 Ω

lowed by constant voltage. Figure 6-1 depicts a typical

stand-alone application circuit and Figure 6-2 depicts

the accompanying charge profile.

Q1

NDS8434 IOUT

RSENSE

PACK+

100 mΩ

10 µF

SHDN

1

VIN

8

GND

VSNS

+

2

7

MODE

MCP73827

VDRV

-

100 kΩ

3

IMON

6

VBAT

4

5

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

5V

MODE - CHARGE

STATUS OUTPUT

0V

1.5V

IMON - CHARGE

CURRENT MONITOR

0V

FIGURE 6-2: Typical Charge Profile.

CHARGE

CURRENT

© 2007 Microchip Technology Inc.

DS21704B-page 11

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