Linear Technology Analog Devices LTC3882-1, Datasheet

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LTC3882-1
78
Rev A
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VIN_ON
The VIN_ON command sets the input voltage, in volts, required to start power conversion.
This command has two data bytes in Linear_5s_11s format.
VIN_OFF
The VIN_OFF command sets the minimum input voltage, in volts, at which power conversion stops.
This command has two data bytes in Linear_5s_11s format.
VIN_OV_FAULT_LIMIT
The VIN_OV_FAULT_LIMIT command sets the value of the input voltage measured by the ADC, in volts, that causes
an input overvoltage fault.
This command has two data bytes in Linear_5s_11s format.
VIN_UV_WARN_LIMIT
The VIN_UV_WARN_LIMIT command sets the value of input voltage measured by the ADC that causes an input under-
voltage warning. This warning is disabled until the input exceeds the input startup threshold value set by the VIN_ON
command and the unit has been enabled. If the VIN_UV_WARN_LIMIT is then exceeded, the device:
• Sets the INPUT Bit in the STATUS_WORD
• Sets the V
IN
Undervoltage Warning Bit in the STATUS_INPUT Command
• Notifies the Host by Asserting ALERT , Unless Masked
INPUT VOLTAGE AND LIMITS
COMMAND NAME
CMD
CODE DESCRIPTION TYPE PAGED
DATA
FORMAT UNITS NVM
DEFAULT
VALUE
VIN_ON 0x35 Minimum input voltage to begin power
conversion.
R/W Word N L11 V
l
6.5V
0xCB40
VIN_OFF 0x36 Decreasing input voltage at which power
conversion stops.
R/W Word N L11 V
l
6.0V
0xCB00
VIN_OV_FAULT_LIMIT 0x55 V
IN
overvoltage fault limit. R/W Word N L11 V
l
15.5V
0xD3E0
VIN_UV_WARN_LIMIT 0x58 V
IN
undervoltage warning limit. R/W Word N L11 V
l
6.3V
0xCB26
Related commands: STATUS_INPUT, SMBALERT_MASK, READ_VIN, VIN_OV_FAULT_RESPONSE
PMBus COMMAND DETAILS
(Input Voltage and Limits)