LX2205 データシートの表示（PDF） - Microsemi Corporation

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LX2205

1A Li-Ion Battery Charger with Power Source Management

Microsemi Corporation 

LX2205

® 1A Li-Ion Battery Charger with Power Source Management

TM

PRODUCTION DATA SHEET

CHARGER CONTROL FLOW DIAGRAM

START

RETURN TO START IF

VSYS > VBAT, UVLO, SUSP, OR SHDN CHANGE

STATE.

A TMP FAULT CAUSES THE CHARGER TO

SUSPEND CHARGING. ONCE THE FAULT CLEARS,

CHARGING RESUMES AT THE SAME POINT.

YES

SHDN

NO

VSYS > VBAT NO

YES

YES

UVLO

NO

SWITCH OFF

DISCHARGE

MODE

VOLTAGE

MONITORING

MODE (STATE).

VBAT<97% NO

YES

NO

DC OK

YES

VBAT>60%

YES

NO CONDITION

CHARGE

MODE

SUSP

NO

YES

USB

SUSPEND

CONSTANT CURRENT IUCL DETERMINED BY THE

CHARGE MODE

STATE OF UCL.

CONSTANT VOLTAGE

CHARGE MODE

TEMP < 140 NO

YES

ISYS< IMAX NO

YES

YES

DC OK

NO

IUSB< IUCL

NO

YES

REDUCE

CHARGE

CURRENT

NO VBAT> VCV

YES

TEMP < 140 NO

YES

ISYS< IMAX NO

YES

YES

DC OK

NO

IUSB< IUCL

NO

YES

REDUCE

CHARGE

CURRENT

NO IBAT<ITAPER

YES

Copyright © 2007

Rev. 1.0a, 2007-03-02

Microsemi

Analog Mixed Signal Group

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 6

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