Datasheet
LTC3883/LTC3883-1
96
3883fa
For more information www.linear.com/LTC3883
PMBus
COMMAND DETAILS
READ_IOUT 0x8C Measured output current. R Word L11 A NA
READ_TEMPERATURE_1 0x8D External diode junction temperature. This is the value
used for all temperature related processing, including
IOUT_CAL_GAIN.
R Word L11 C NA
READ_TEMPERATURE_2 0x8E Internal junction temperature. Does not affect any
other commands.
R Word L11 C NA
READ_DUTY_CYCLE 0x94 Duty cycle of the top gate control signal. R Word L11 % NA
READ_POUT 0x96 Calculated output power. R Word L11 W NA
READ_PIN 0x97 Calculated input power R Word L11 W NA
MFR_IOUT_PEAK 0xD7 Report the maximum measured value of READ_IOUT
since last MFR_CLEAR_PEAKS.
R Word L11 A NA
MFR_VOUT_PEAK 0xDD Maximum measured value of READ_VOUT since last
MFR_CLEAR_PEAKS.
R Word L16 V NA
MFR_VIN_PEAK 0xDE Maximum measured value of READ_VIN since last
MFR_CLEAR_PEAKS.
R Word L11 V NA
MFR_TEMPERATURE_1_PEAK 0xDF Maximum measured value of external Temperature
(READ_TEMPERATURE_1) since last MFR_CLEAR_
PEAKS.
R Word L11 C NA
MFR_READ_IIN_CHAN_PEAK 0xE1 Maximum measured value of READ_IIN command
since last MFR_CLEAR_PEAKS.
R Word L11 A NA
MFR_READ_ICHIP 0xE4 Measured current used by the LTC3883 R Word L11
A NA
MFR_READ_IIN_CHAN
0xED Calculated input supply current based upon
READ_IOUT and DUTY_CYCLE
R W
ord L11 A NA
MFR_TEMPERATURE_2_PEAK 0xF4 Peak internal die temperature since last
MFR_CLEAR_PEAKS.
R W
ord L11 C NA
READ_VIN
The READ_VIN command returns the measured V
IN
pin voltage, in volts added to READ_ICHIP • MFR_RVIN. This
compensates for the IR voltage drop across the V
IN
filter element due to the supply current of the LTC3883.
This read-only command has two data bytes and is formatted in Linear_5s_11s format.
READ_VOUT
The READ_VOUT command returns the measured output voltage in the same format as set by the VOUT_MODE
command.
This read-only command has two data bytes and is formatted in Linear_16u format.
READ_IIN
The
READ_IIN command returns the input current, in Amperes, as measured across the input current sense resistor
(see also MFR_IIN_CAL_GAIN).
This read-only command has two data bytes and is formatted in Linear_5s_11s format.
READ_IOUT
The READ_IOUT command returns the average output current in amperes. The IOUT value is a function of:
a) the differential voltage measured across
the I
SENSE
pins
b) the IOUT_CAL_GAIN value