LTC3883 Datasheet, PDF (34/112 Pages) Linear Technology – Single Phase Step-Down DC/DC Controller with Digital Power System Management

LTC3883/LTC3883-1
PMBus Command Summary
COMMAND NAME
CMD
CODE DESCRIPTION
USER_DATA_01
0xB1 Manufacturer reserved for LTpowerPlay.
USER_DATA_02
0xB2 OEM RESERVED. Typically used for part
serialization
USER_DATA_03
0xB3 An NVM word available for the user.
USER_DATA_04
0xB4 An NVM word available for the user.
MFR_T_SELF_HEAT
0xB8 Reports the calculated self heat value attributed
to the inductor.
MFR_IOUT_CAL_GAIN_ 0xB9 Coefficient used to emulate thermal time
TAU_INV
constant.
MFR_IOUT_CAL_GAIN_ 0xBA Used to calculate the instance inductor self
THETA
heating effect.
MFR_EE_UNLOCK
0xBD Unlock user EEPROM for access by MFR_EE_
ERASE and MFR_EE_DATA commands.
MFR_EE_ERASE
0xBE Initialize user EEPROM for bulk programming by
MFR_EE_DATA.
MFR_EE_DATA
0xBF Data transferred to and from EEPROM using
sequential PMBus word reads or writes.
Supports bulk programming.
MFR_CHAN_CONFIG_
LTC3883
0xD0 Configuration bits that are channel specific.
MFR_CONFIG_ALL_
LTC3883
0xD1 General configuration bit.
MFR_GPIO_PROPAGATE_ 0xD2 Configuration that determines which faults are
LTC3883
propagated to the GPIO pin.
MFR_PWM_MODE_
LTC3883
0xD4 Configuration for the PWM engine.
MFR_GPIO_RESPONSE
0xD5 Action to be taken by the device when the GPIO
pin is externally asserted low.
MFR_OT_FAULT_
RESPONSE
0xD6 Action to be taken by the device when an internal
overtemperature fault is detected.
MFR_IOUT_PEAK
0xD7 Report the maximum measured value of READ_
IOUT since last MFR_CLEAR_PEAKS.
MFR_RETRY_DELAY
0xDB Retry interval during FAULT retry mode.
TYPE
R/W Word
R/W Word
R/W Word
R/W Word
R Word
R/W Word
R/W Word
R/W Byte
R/W Byte
R/W Word
R/W Byte
R/W Byte
R/W Word
R/W Byte
R/W Byte
R Byte
R Word
R/W Word
DATA
FORMAT
Reg
Reg
Reg
Reg
L11
L11
L11
Reg
Reg
Reg
Reg
Reg
Reg
Reg
Reg
Reg
L11
L11
UNITS
C
s^–1
C/Watt
A
ms
MFR_RESTART_DELAY 0xDC Minimum time the RUN pin is held low by the R/W Word L11
ms
LTC3883.
MFR_VOUT_PEAK
0xDD Maximum measured value of READ_VOUT since R Word L16
V
last MFR_CLEAR_PEAKS.
MFR_VIN_PEAK
0xDE Maximum measured value of READ_VIN since
R Word
L11
V
last MFR_CLEAR_PEAKS.
MFR_TEMPERATURE_1_ 0xDF Maximum measured value of external
R Word L11
C
PEAK
Temperature (READ_TEMPERATURE_1) since
last MFR_CLEAR_PEAKS.
MFR_READ_IIN_PEAK
0xE1 Maximum measured value of READ_IIN
command since last MFR_CLEAR_PEAKS
R Word L11
A
MFR_CLEAR_PEAKS
0xE3 Clears all peak values.
Send Byte
MFR_READ_ICHIP
0xE4 Measured supply current of the LTC3883
R Word L11
A
DEFAULT
NVM VALUE PAGE
Y
NA
90
Y
NA
90
Y 0x0000 90
Y 0x0000 90
NA
75
Y
0.0
75
0x8000
Y
0.0
75
0x8000
NA
105
NA
106
NA
106
Y
0x1F
65
Y
0x09
66
Y 0x2993 89
Y
0xD2
68
Y
0xC0
90
0xC0
87
NA
99
Y
350
82
0xFABC
Y
500
82
0xFBE8
NA
99
NA
100
NA
100
NA
100
NA
93
NA
100
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