MCP73864-I/SL 데이터 시트보기 (PDF) - Microchip Technology

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MCP73864-I/SL

Advanced Single or Dual Cell, Fully Integrated Li-Ion/Li-Polymer Charge Management Controllers

Microchip Technology 

6.0 APPLICATIONS

The MCP7386X is designed to operate in conjunction

with a host microcontroller or in stand-alone applica-

tions. The MCP7386X provides the preferred charge

algorithm for Lithium-Ion and Lithium-Polymer cells

Constant-current followed by Constant-voltage.

.

MCP73861/2/3/4

Figure 6-1 illustrates a typical stand-alone application

circuit, while Figures 6-2 and 6-3 illustrate the

accompanying charge profile

Unregulated

Wall Cube

1.5K

STAT1

EN VSS2

16 15 14 13

VSET 1

12 VBAT3

VDD1 2

VDD2 3

MCP73861

11 VBAT2

10 VBAT1

VSS1 4

9 VSS3

5678

PROG

RPROG

TIMER

CTIMER

RT1

RT2

FIGURE 6-1:

Typical Application Circuit.

+ Single

–

Lithium-Ion

Cell

Regulation

Voltage

(VREG)

Regulation

Current

(IREG)

Preconditioning

Mode

Constant-Current

Mode

Constant-Voltage

Mode

Transition

Threshold

(VPTH)

Charge

Voltage

Precondition

Current

(IPREG)

Termination

Current

(ITERM)

Precondition

Safety Timer

Fast Charge

Safety Timer

FIGURE 6-2:

Typical Charge Profile.

Charge

Current

Elapsed Time

Termination Timer

 2004-2013 Microchip Technology Inc.

DS21893F-page 19

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