MCP73837 Ver la hoja de datos (PDF) - Microchip Technology

Número de pieza

componentes Descripción

Fabricante

MCP73837

Advanced Stand-Alone Li-Ion / Li-Polymer Battery Charge Management Controller with Autonomous AC-Adapter or USB-Port Source Selection

Microchip Technology 

MCP73837/8

Functional Block Diagram (MCP73837/8)

VUSB

DIRECTION

CONTROL

VOREG

6 µA

VBAT

SENSEFET

G=0.001

SENSEFET

G=0.001

DIRECTION

CONTROL

VAC

PROG1

SENSEFET

G=0.001

SENSEFET

G=0.001

REFERENCE, VREF(1.21V)

BIAS, UVLO,

AND SHDN

VOREG

UVLO

PROG2

STAT1

STAT2

PG (TE)

TERM

CHARGE

CONTROL,

TIMER,

AND

STATUS

LOGIC

CHARGE

LDO

HTVT

LTVT

100 mA/500 mA 10k 2k

VOREG

AC/USB

1k VREF

CURRENT

+ LIMIT

-

310k

72.7k

AC/USB

111k

+

-

PRECONDITION

+ CA

-

10k

470.6k

48k

6k

157.3k

VOREG

+ VA

-

470.6k

121k

1M

175k

50 µA

175k

THERM

VSS

© 2007 Microchip Technology Inc.

DS22071A-page 3

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