LTC4097 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC4097' PDF : 20 Pages View PDF
LTC4097
OPERATION
STARTUP
BAT < 2.9V
DCIN POWER APPLIED
ONLY USB POWER APPLIED
POWER SELECTION
TRICKLE CHARGE
MODE
1/10th FULL CURRENT
CHRG STATE: PULLDOWN
DCIN POWER
REMOVED
USBIN POWER
REMOVED OR
DCIN POWER
APPLIED
TRICKLE CHARGE
MODE
1/10th FULL CURRENT
CHRG STATE: PULLDOWN
BAT < 2.9V
BAT > 2.9V
2.9V < BAT
CHARGE
MODE
FULL CURRENT
CHRG STATE: PULLDOWN
IBAT < ITERMINATE
IN VOLTAGE MODE
BAT > 2.9V
CHARGE
MODE
FULL CURRENT⇒HPWR = HIGH
1/5 FULL CURRENT⇒HPWR = LOW
2.9V < BAT
CHRG STATE: PULLDOWN
IBAT < ITERMINATE
IN VOLTAGE MODE
BAT < 4.1V
STANDBY
MODE
NO CHARGE CURRENT
CHRG STATE: Hi-Z
STANDBY
MODE
NO CHARGE CURRENT
CHRG STATE: Hi-Z
BAT < 4.1V
SUSP
DRIVEN LOW
SHUTDOWN
MODE
IDCIN DROPS TO 20µA
CHRG STATE: Hi-Z
SUSP
DRIVEN HIGH
DCIN POWER
REMOVED
SUSP
DRIVEN HIGH
USBIN POWER
REMOVED OR
DCIN POWER
APPLIED
SHUTDOWN
MODE
IUSBIN DROPS TO 20µA
CHRG STATE: Hi-Z
SUSP
DRIVEN LOW
4097 F01
Figure 1. LTC4097 State Diagram of a Charge Cycle
4097f
14
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