LTC3882_15 Datasheet, PDF (39/104 Pages) Linear Technology – Dual Output PolyPhase Step-Down DC/DC Voltage Mode Controller with Digital Power System Management

LTC3882
PMBus COMMAND SUMMARY
Table 7. PMBus Command Summary
COMMAND NAME
CMD
CODE DESCRIPTION
DATA
DEFAULT SEE
TYPE PAGED FORMAT UNITS NVM VALUE PAGE
MFR_IOUT_PEAK
0xD7 Maximum I_OUT measurement since last R Word Y
L11
A
89
MFR_CLEAR_PEAKS.
MFR_RETRY_DELAY
0xDB Minimum time before retry after a fault. R/W Word Y
L11
ms l 350ms 95
0xFABC
MFR_RESTART_DELAY
0xDC Minimum time RUN pin is held low by R/W Word Y
L11
ms l 500ms 80
the LTC3882.
0xFBE8
MFR_VOUT_PEAK
0xDD Maximum V_OUT measurement since last R Word Y
L16
V
89
MFR_CLEAR_PEAKS.
MFR_VIN_PEAK
0xDE Maximum V_IN measurement since last R Word N
L11
V
89
MFR_CLEAR_PEAKS.
MFR_TEMPERATURE_1_PEAK 0xDF Maximum external temperature
R Word Y
L11
°C
90
measurement since last MFR_CLEAR_
PEAKS.
MFR_CLEAR_PEAKS
0xE3 Clear all peak values.
Send Byte N
90
MFR_PADS_LTC3882
0xE5 State of selected LTC3882 pads.
R Word N
Reg
87
MFR_ADDRESS
0xE6 Specify right-justified 7-bit device
address.
R/W Byte N
Reg
l
0x4F
68
MFR_FAULT_LOG_STORE
0xEA Force transfer of fault log from operating Send Byte N
99
memory to EEPROM.
MFR_FAULT_LOG_CLEAR
0xEC Clear existing EEPROM fault log.
Send Byte N
98
MFR_FAULT_LOG
0xEE Read fault log data.
R Block N
Reg
98
MFR_COMMON
0xEF LTC-generic device status reporting.
R Byte N
Reg
87
MFR_COMPARE_USER_ALL 0xF0 Compare operating memory with
Send Byte N
99
EEPROM contents.
MFR_TEMPERATURE_2_PEAK 0xF4 Maximum internal temperature
R Word N
L11
°C
90
measurement since last
MFR_CLEAR_PEAKS.
MFR_PWM_CONFIG_LTC3882 0xF5 LTC3882 PWM configuration common to R/W Byte N
Reg
both channels.
l
0x14
72
MFR_IOUT_CAL_GAIN_TC
0xF6 Output current sense element
temperature coefficient.
R/W Word Y
CF ppm/°C l 3900ppm/°C 79
0x0F3C
MFR_TEMP_1_GAIN
0xF8 Slope for external temperature
calculations.
R/W Word Y
CF
l
1.0
82
0x4000
MFR_TEMP_1_OFFSET
0xF9 Offset addend for external temperature R/W Word Y
calculations.
L11 °C or V l
0.0
82
0x8000
MFR_RAIL_ADDRESS
0xFA Specify unique right-justified 7-bit
address for channels comprising a
PolyPhase output.
R/W Byte Y
Reg
l
0x80
68
MFR_RESET
0xFD Force full reset without removing power. Send Byte N
70
NVM l Indicates a command value stored to internal EEPROM using STORE_USER_ALL or restored to RAM from internal EEPROM at power-up or
execution of RESTORE_USER_ALL or MFR_RESET.
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