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FAN5400 Просмотр технического описания (PDF) - Fairchild Semiconductor

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FAN5400 USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost Regulator Fairchild
Fairchild Semiconductor Fairchild
FAN5400 Datasheet PDF : 37 Pages
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CHARGE STATE
VBAT < VSHORT
NO
VBUS OK?
YES
Disable Charging
Indicate
VBUS Fault
Enable ISHORT ,
Reset Safety reg
Indicate Charging
YES
PWM Charging
Indicate Charging
NO
VBUS OK?
YES
T15MIN
Timeout?
NO
Disable Charging
Indicate
VBUS Fault
T15MIN
Timeout?
NO
YES
YES
Indicate timer fault
Set CE
NO
NO
Charge
Configuration
State
HIGHZ mode
NO
IOUT < ITERM
Termination enabled
VBAT > VOREG–VRCH
Indicate Charge
Complete
VBAT < VOREG–VRCH
YES
YES
Stop Charging
Enable IDET for TDETECT
NO
VBAT < VOREG–VRCH
YES
Reset Safety reg
Delay tINT
Battery Removed
Reset charge
parameters
Figure 38. Charge Mode
© 2009 Fairchild Semiconductor Corporation
FAN5400 Family • Rev. 1.0.7
21
www.fairchildsemi.com
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