Datasheet

LTC3883/LTC3883-1
33
3883fa
For more information www.linear.com/LTC3883
PMBus COMMAND SUMMARY
COMMAND NAME
CMD
CODE DESCRIPTION TYPE
DATA
FORMAT UNITS NVM
DEFAULT
VALUE PAGE
TON_RISE 0x61 Time from when the output starts to rise until the
output voltage reaches the VOUT commanded
value.
R/W Word L11 ms Y 8.0
0xD200
80
TON_MAX_FAULT_LIMIT 0x62 Maximum time from V
OUT_EN
on for VOUT to
cross the VOUT_UV_FAULT_LIMIT.
R/W Word L11 ms Y 10.00
0xD280
80
TON_MAX_FAULT_
RESPONSE
0x63 Action to be taken by the device when a TON_
MAX_FAULT event is detected.
R/W Byte Reg Y 0xB8
85
TOFF_DELAY 0x64 Time from RUN and/or Operation off to the start
of TOFF_FALL ramp.
R/W Word L11 ms Y 0.0
0x8000
81
TOFF_FALL 0x65 Time from when the output starts to fall until the
output reaches zero volts.
R/W Word L11 ms Y 8.00
0xD200
81
TOFF_MAX_WARN_LIMIT 0x66 Maximum allowed time, after TOFF_FALL
completed, for the unit to decay below 12.5%.
R/W Word L11 ms Y 150
0xF258
81
STATUS_BYTE 0x78 One byte summary of the unit’s fault condition. R/W Byte Reg NA
92
STATUS_WORD 0x79 Tw o byte summary of the unit’s fault condition. R/W Word Reg NA
92
STATUS_VOUT 0x7A Output voltage fault and warning status. R/W Byte Reg NA
93
STATUS_IOUT 0x7B Output current fault and warning status. R/W Byte Reg NA
93
STATUS_INPUT 0x7C Input supply fault and warning status. R/W Byte Reg NA
93
STATUS_TEMPERATURE 0x7D External temperature fault and warning status for
READ_TEMERATURE_1.
R/W Byte Reg NA
93
STATUS_CML 0x7E Communication and memory fault and warning
status.
R/W Byte Reg NA
94
STATUS_MFR_SPECIFIC 0x80 Manufacturer specific fault and state information. R/W Byte Reg NA
94
READ_VIN 0x88 Measured input supply voltage. R Word L11 V NA
96
READ_IIN 0x89 Measured input supply current. R Word L11 A NA
96
READ_VOUT 0x8B Measured output voltage. R Word L16 V NA
96
READ_IOUT 0x8C Measured output current. R Word L11 A NA
96
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
98
READ_TEMPERATURE_2 0x8E Internal junction temperature. Does not affect
any other commands.
R Word L11 C NA
98
READ_DUTY_CYCLE 0x94 Duty cycle of the top gate control signal. R Word L11 % NA
98
READ_POUT 0x96 Calculated output power. R Word L11 W NA
98
READ_PIN 0x97 Calculated input power R Word L11 W NA
98
PMBus_REVISION 0x98 PMBus revision supported by this device.
Current revision is 1.1.
R Byte Reg FS 0x11
91
MFR_ID 0x99 The manufacturer ID of the LTC3883 in ASCII. R String ASC LT C
91
MFR_MODEL 0x9A Manufacturer part number in ASCII. R String ASC LTC3883
91
MFR_VOUT_MAX 0xA5 Maximum allowed output voltage. R Word L16 V 5.5
0x5800
74
USER_DATA_00 0xB0 OEM RESERVED. Typically used for part
serialization.
R/W Word Reg Y NA
90
USER_DATA_01 0xB1 Manufacturer reserved for LTpowerPlay. R/W Word Reg Y NA
90
USER_DATA_02 0xB2 OEM RESERVED. Typically used for part
serialization
R/W Word Reg Y NA
90
USER_DATA_03 0xB3 An NVM word available for the user. R/W Word Reg Y 0x0000
90