FAN5400_11 Datasheet, PDF (23/37 Pages) Fairchild Semiconductor – FAN5400 / FAN5401 / FAN5402 / FAN5403 / FAN5404 / FAN5405 USB-Compliant Single-Cell Li-Ion Switching Charger

Charge Start
Start T_15MIN
T_15MIN
Active?
Reset Registers
Start T_32SEC
Stop T_15MIN
YES
NO
YES
I²C Write
NO
received?
YES
T_32SEC
Expired?
NO
T_15MIN
Expired?
NO
Continue
Charging
Timer Fault :
Set CCEE
YES
Figure 41. Timer Flow Chart for FAN5400, FAN5402, FAN5403, FAN5405
Charge Start
from Host control
Reset T_32SEC
Charge
NO
YES
TMR_RST
bit Set?
T_32SEC
Expired?
YES
Timer Fault
Stop Charging and
Reset Registers
NO
Figure 42. Timer Flow Chart for FAN5401, FAN5404
© 2009 Fairchild Semiconductor Corporation
FAN5400 Family • Rev. 1.0.7
23
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