LX2205

Microsemi

Analog Mixed Signal Group

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

Page 6

Copyright

© 2007

Rev. 1.0a, 2007-03-02

1A Li-Ion Battery Charger with Power Source Management

TM

®

CHARGER CONTROL FLOW D I AGRAM

START

YES

DISCHARGE

MODE

NO

CONDITION

CHARGE

MODE

NO

YES

CONSTANT CURRENT

CHARGE MODE

TEMP <

140

REDUCE

CHARGE

CURRENT

NO

NO

YES

NO

YES

NO

RETURN TO START IF

STATE.

SWITCH OFF

STATE OF UCL.

UVLO

YES

NO

SHDN

YES

NO

DC OK

NO

YES

SUSP

YES

NO

DC OK

YES

NO

CONSTANT VOLTAGE

CHARGE MODE

TEMP <

140

REDUCE

CHARGE

CURRENT

NO

NO

DC OK

YES

NO

VOLTAGE

MONITORING

MODE (STATE).

YES

NO

USB

SUSPEND

A TMP FAULT CAUSES THE CHARGER TO

SUSPEND CHARGING. ONCE THE FAULT CLEARS,

CHARGING RESUMES AT THE SAME POINT.

YES

YES

YES

YES

YES

YES

NO

NO