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LT8491
2
I
C REGISTER DESCRIPTIONS
CONFIGURE MISC.
Table 18. Summary of Miscellaneous Configuration Registers
REGISTER NAME
SIZE
CFG_SCAN_RATE_LP
BYTE
CFG_SCAN_RATE
BYTE
CFG_CHRG_MISC
BYTE
CFG_SCAN_RATE_LP
2
I
C REG ADDRESS BIT(S)
0x4B
[7:0]
This register sets the timed full panel scan period in solar low power mode. For example, a value of 0x0B causes a
full panel scan to be performed every 183 seconds. If not solar powered, this register setting is ignored, and no full
scans are performed. Note that performing full panel scans at short intervals can disrupt the charger output power
and efficiency.
A value of 0x00 disables full panel scans in low power mode. The charger will still perform a full panel scan dur-
ing startup and between certain stage transitions as part of the proprietary algorithm for identifying the maximum
power point.
Related Data Sheet Section: HW Config: Solar Panel Powered Charging, Maximum Power Point Tracking, Optional:
Low Power Mode
CFG_SCAN_RATE
2
I
C REG ADDRESS BIT(S)
0x4C
[7:0]
This register sets the timed full panel scan period. For example, a value of 0x48 causes a full panel scan to be per-
formed every 20 minutes. If not solar powered, this register setting is ignored, and no full scans are performed. Note
that performing full panel scans at short intervals can disrupt the charger output power and efficiency.
A value of 0x00 disables most full panel scans. The charger will still perform a full panel scan during startup and between
certain stage transitions as part of the proprietary algorithm for identifying the maximum power point.
Related Data Sheet Section: HW Config: Solar Panel Powered Charging, Maximum Power Point Tracking, Optional:
Low Power Mode
56
2
2
I
C REGISTER
I
C BOOT READ
ADDRESS
ADDRESS
0x4B
0xAB
0x4C
0xAC
0x4D
0xAD
UNITS
FORMAT
Seconds
Unsigned Integer
UNITS
FORMAT
Seconds
Unsigned Integer
For more information
DESCRIPTION
Configures timed full panel scan frequency in solar low power mode.
Configures timed full panel scan frequency when solar powered.
Configure Use V
in Stage 2, Low Power Mode, Stage 3 and Temperature
S3
Compensation.
EXAMPLES
DESCRIPTION
183 sec = 0x0B
Configures timed full panel scan period in solar low power mode.
20 min = 0x48
16.66 seconds per bit.
EXAMPLES
DESCRIPTION
183 sec = 0x0B
Configures timed full panel scan period when solar powered.
20 min = 0x48
16.66 seconds per bit.
www.analog.com
REF
PAGE
56
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Rev. 0
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