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FAN54005UCX. Datasheet(PDF) 21 Page - ON Semiconductor

Part # FAN54005UCX.
Description  USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost for 200 mA to 1.45 A Systems
PDF  32 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

FAN54005UCX. Datasheet(HTML) 21 Page - ON Semiconductor

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FAN54005
www.onsemi.com
21
Flow Charts (Continued)
Charge
Configuration
State
T32Sec
ARMED AND
CE# = 0?
Charge State
YES
NO
VBAT < VOREG
for 262ms?
NO
YES
NO
YES
START T15Min
Has T15Min
and CE# = 0
CE
CE
Figure 38. Charge Configuration
Charge Start
Start T
15MIN
T
15MIN
Active?
Reset Registers
YES
NO
Start T
32SEC
Stop T
15MIN
I2C Write
received?
YES
T
15MIN
Expired?
NO
Continue
Charging
T
32SEC
Expired?
YES
NO
NO
YES
Timer Fault :
Set CE
CE
Figure 39. Timer Flow Chart
Dynamic Input Voltage Control
The FAN54005 has functionality that limits input current
in case a current−limited incompatible adapter is supplying
VBUS. These slowly increase the charging current until
either:
• IINLIM or IOCHARGE is reached
or
• VBUS=VSP.
If VBUS collapses to VSP when the current is ramping up, the
FAN54005 charges with an input current that keeps
VBUS=VSP. When the VSP control loop is limiting the charge
current, the SP bit (REG 05[4]) is set.



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