Datasheet

LTC3883/LTC3883-1
34
3883fa
For more information www.linear.com/LTC3883
PMBus COMMAND SUMMARY
COMMAND NAME
CMD
CODE DESCRIPTION TYPE
DATA
FORMAT UNITS NVM
DEFAULT
VALUE PAGE
USER_DATA_04 0xB4 An NVM word available for the user. R/W Word Reg Y 0x0000
90
MFR_T_SELF_HEAT 0xB8 Reports the calculated self heat value attributed
to the inductor.
R Word L11 C NA
75
MFR_IOUT_CAL_GAIN_
TAU_INV
0xB9 Coefficient used to emulate thermal time
constant.
R/W Word L11 s
–1
Y 0.0
0x8000
75
MFR_IOUT_CAL_GAIN_
THETA
0xBA Used to calculate the instance inductor self
heating effect.
R/W Word L11 C/Watt Y 0.0
0x8000
75
MFR_EE_UNLOCK 0xBD Unlock user EEPROM for access by MFR_EE_
ERASE and MFR_EE_DATA commands.
R/W Byte Reg NA
104
MFR_EE_ERASE 0xBE Initialize user EEPROM for bulk programming by
MFR_EE_DATA.
R/W Byte Reg NA
105
MFR_EE_DATA 0xBF Data transferred to and from EEPROM using
sequential PMBus word reads or writes.
Supports bulk programming.
R/W Word Reg NA
105
MFR_CHAN_CONFIG_
LT C 3883
0xD0 Configuration bits that are channel specific. R/W Byte Reg Y 0x1F
65
MFR_CONFIG_ALL_
LT C 3883
0xD1 General configuration bit. R/W Byte Reg Y 0x09
66
MFR_GPIO_PROPAGATE_
LT C 3883
0xD2 Configuration that determines which faults are
propagated to the GPIO pin.
R/W Word Reg Y 0x2993
89
MFR_PWM_MODE_
LT C 3883
0xD4 Configuration for the PWM engine. R/W Byte Reg Y 0xD2
68
MFR_GPIO_RESPONSE 0xD5 Action to be taken by the device when the GPIO
pin is externally asserted low.
R/W Byte Reg Y 0xC0
90
MFR_OT_FAULT_
RESPONSE
0xD6 Action to be taken by the device when an internal
overtemperature fault is detected.
R Byte Reg 0xC0
87
MFR_IOUT_PEAK 0xD7 Report the maximum measured value of READ_
IOUT since last MFR_CLEAR_PEAKS.
R Word L11 A NA
98
MFR_RETRY_DELAY 0xDB Retry interval during FAULT retry mode. R/W Word L11 ms Y 350
0xFABC
82
MFR_RESTART_DELAY 0xDC Minimum time the RUN pin is held low by the
LTC3883.
R/W Word L11 ms Y 500
0xFBE8
82
MFR_VOUT_PEAK 0xDD Maximum measured value of READ_VOUT since
last MFR_CLEAR_PEAKS.
R Word L16 V NA
98
MFR_VIN_PEAK 0xDE Maximum measured value of READ_VIN since
last MFR_CLEAR_PEAKS.
R Word L11 V NA
99
MFR_TEMPERATURE_1_
PEAK
0xDF Maximum measured value of external
Temperature (READ_TEMPERATURE_1) since
last MFR_CLEAR_PEAKS.
R Word L11 C NA
99
MFR_READ_IIN_PEAK 0xE1 Maximum measured value of READ_IIN
command since last MFR_CLEAR_PEAKS
R Word L11 A NA
99
MFR_CLEAR_PEAKS 0xE3 Clears all peak values. Send Byte NA
92
MFR_READ_ICHIP 0xE4 Measured supply current of the LTC3883 R Word L11 A NA
99
MFR_PADS 0xE5 Digital status of the I/O pads. R Word Reg NA
95
MFR_ADDRESS 0xE6 Sets the 7-bit I
2
C address byte. R/W Byte Reg Y 0x4F 65
MFR_SPECIAL_ID 0xE7 Manufacturer code representing the LTC3883 R Word Reg 0x430X
91
MFR_IIN_CAL_GAIN 0xE8 The resistance value of the input current sense
element in mΩ.
R/W Word L11 mΩ Y 5
0xCA80
78