FAN5405 Fairchild Semiconductor, FAN5405 Datasheet - Page 32

• Manufacturer Part Number: FAN5405
• Description: The FAN5405 combines a highly integrated switched-mode charger, to minimize single-cell Lithium-ion (Li-ion) charging time from a USB power source, and a boost regulator to power a USB peripheral from the battery
• Manufacturer: Fairchild Semiconductor

Register Descriptions
The FAN5400-FAN5402 have seven user-accessible registers; the FAN5403-05 have an additional two registers, as defined in
Table 22.
Table 22. I
Table 23. Register Bit Definitions
This table defines the operation of each register bit for all IC versions. Default values are in bold text.
CONTROL0
© 2009 Fairchild Semiconductor Corporation
FAN5400 Family • Rev. 1.0.7
Bit
5:4
2:0
7
6
3
FAN5403-FAN5405
TMR_RST
EN_STAT
BOOST
ALL
ALL
FAULT
Name
IC
STAT
OTG
2
C Register Address
Value
00
01
10
11
1
0
1
0
1
Type
R/W
SP_CHARGER
W
R
R
R
R
CONTROL0
CONTROL1
MONITOR
IC_INFO
SAFETY
OREG
Name
IBAT
Register Address: 00
Writing a 1 resets the t
Returns the OTG pin level (1=HIGH)
Prevents STAT pin from going LOW during charging; STAT pin still pulses to
enunciate faults
Enables STAT pin LOW when IC is charging
Ready
Charge in progress
Charge done
Fault
IC is not in Boost Mode
IC is in Boost Mode
Fault status bits: for Charge Mode, see Table 13; for Boost Mode: see Table 18
Register
32
32S
timer; writing a 0 has no effect
REG#
3BH
10H
03
or
0
1
2
4
5
6
Description
7
0
0
0
0
0
0
0
0
Default Value=X1XX 0XXX
6
0
0
0
0
0
0
0
0
5
0
0
0
0
0
0
0
0
Address Bits
4
0
0
0
0
0
0
0
0
3
0
0
0
0
0
0
0
1
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2
0
0
0
0
1
1
1
0
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
0