ACT3704
Rev2, 26-Jul-07
Figure 1:
Typical Li+ Charge Profile and ACT3704 Charge States
VTERM
IBAT
4.20V
510mA
Current
Voltage
VPRECONDITION
2.75V
51mA
IPRECONDITION, IEOC
TEOC
STATE
A
B
C
D
A: PRECONDITION State
B: NORMAL State
C: TOP-OFF State
D: END OF CHARGE State
STATUS AND EOC INDICATORS
Table 3:
nSTAT and nEOC Indicator States
STATE
SHUTDOWN
nSTAT
OFF
ON
nEOC
OFF
OFF
OFF
OFF
ON
PRECONDITION
NORMAL
ON
TOPOFF
ON
DELAY TIME TO EOC
END OF CHARGE
TIMEOUT FAULT
OFF
OFF
OFF
ON
OFF
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