LTC4098EPDC-1-PBF(RevB) View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC4098EPDC-1-PBF
(Rev.:RevB)

USB Compatible Switching Power Managers/Li-Ion Chargers with Overvoltage Protection

Linear Technology 

OPERATION

POWER ON/

ENABLE CHARGER

CLEAR EVENT TIMER

ASSERT CHRG LOW

LTC4098/LTC4098-1

YES

NTC OUT OF RANGE

NO

BAT < 2.85V

BATTERY STATE

BAT > VFLOAT – E

CHARGE AT

100V/RPROG (C/10 RATE)

2.85V < BAT < VFLOAT – E

CHARGE AT

1030V/RPROG RATE

CHARGE WITH

FIXED VOLTAGE

(VFLOAT)

RUN EVENT TIMER

PAUSE EVENT TIMER

RUN EVENT TIMER

INHIBIT CHARGING

PAUSE EVENT TIMER

CHRG CURRENTLY YES

Hi-Z

NO

INDICATE

NTC FAULT

AT CHRG

NO

TIMER > 30 MINUTES

YES

INHIBIT CHARGING

NO

TIMER > 4 HOURS

YES

STOP CHARGING

INDICATE BATTERY

FAULT AT CHRG

NO

BAT > 2.85V

YES

BAT RISING

YES

THROUGH

VRECHRG

NO

CHRG HIGH-Z

BAT FALLING

YES

THROUGH

VRECHRG

NO

BAT < VRECHRG

NO

YES

Figure 6. Battery Charger State Diagram

NO

IBAT < C/10

YES

CHRG Hi-Z

40981 F06

40981fb

21

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