MCP73853-IMF 데이터 시트보기 (PDF) - Microchip Technology

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MCP73853-IMF

USB Compatible Li-Ion/Li-Polymer Charge Management Controllers

Microchip Technology 

MCP73853/55

Typical Application

5V

4.7 µF

Functional Block Diagram

400 mA Lithium-Ion Battery Charger

3 VDD1

2 VSET

10 EN

VBAT1 8

VBAT2 9

1 STAT1

TIMER 6

5 PROG

VSS 4, 7

MCP73855

4.7 µF

0.1 µF

+ Single

–

Lithium-Ion

Cell

VDD1

VDD2

PROG

EN

THREF

THERM

TIMER

Direction

Control

VDD

G = 0.001

4 k

3 k

11 k

VREF

9k0

Charge Current

Control Amplifier

+

–

Voltage Control

Amplifier

VREF

110 k

10 k

Charge

Termination

10

k

Comparator

+

–

IREG/12

UVLO

+ COMPARATOR

–

VUVLO

Precondition

Control

VREF

Charge_OK Precondition

Precon.

Comp.

Constant-voltage/

Recharge Comp.

600 k

149 k

Power-On

Delay

VREF

1.58 k

300 k

VBAT1

VBAT2

VBAT3

100 k

50 k

50 k

Bias and

Reference

Generator

VUVLO

VREF(1.2V)

Temperature

+ Comparators

-

+

-

MCP73853 ONLY

VSET

IREG/12

Oscillator

Drv Stat 1

Charge Control,

Charge Timers,

and

Status Logic Drv Stat 2

10.3 k

VSS1

VSS2

VSS3

STAT1

STAT2

MCP73853 ONLY

Charge_OK

DS21915C-page 2

 2004-2013 Microchip Technology Inc.

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