LTC3882_15 Datasheet, PDF (38/104 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
STATUS_TEMPERATURE
0x7D External temperature fault and warning
status.
STATUS_CML
0x7E Communication, memory and logic fault
and warning status.
STATUS_MFR_ SPECIFIC
0x80 LTC3882-specific status.
READ_VIN
READ_VOUT
READ_IOUT
0x88 Measured V_IN.
0x8B Measured V_OUT.
0x8C Measured I_OUT.
READ_TEMPERATURE_1
0x8D Measured external temperature.
READ_TEMPERATURE_2
0x8E Measured internal temperature.
READ_DUTY_CYCLE
0x94 Measured commanded PWM duty cycle.
READ_FREQUENCY
0x95 Measured PWM input clock frequency.
READ_POUT
0x96 Calculated output power.
PMBUS_REVISION
0x98 Supported PMBus version.
DATA
TYPE PAGED FORMAT
R/W Byte Y
Reg
R/W Byte N
Reg
R/W Byte Y
Reg
R Word N
L11
R Word Y
L16
R Word Y
L11
R Word Y
L11
R Word N
L11
R Word Y
L11
R Word Y
L11
R Word Y
L11
R Byte N
Reg
MFR_ID
0x99 Manufacturer identification.
R String N
ASC
MFR_MODEL
0x9A LTC model number.
R String N
ASC
MFR_SERIAL
0x9E Device serial number.
R Block N
ASC
LTC3882 Custom Commands
MFR_VOUT_MAX
0xA5 Maximum value of any V_OUT related
command.
R Word Y
L16
USER_DATA_00
0xB0 EEPROM word reserved for LTpowerPlay. R/W Word N
Reg
USER_DATA_01
0xB1 EEPROM word reserved for LTpowerPlay. R/W Word Y
Reg
USER_DATA_02
0xB2 EEPROM word reserved for OEM use. R/W Word N
Reg
USER_DATA_03
0xB3 EEPROM word available for general data R/W Word Y
Reg
storage.
USER_DATA_04
0xB4 EEPROM word available for general data R/W Word N
Reg
storage.
MFR_EE_UNLOCK
0xBD (contact the factory)
MFR_EE_ERASE
0xBE (contact the factory)
MFR_EE_DATA
0xBF (contact the factory)
MFR_CHAN_CONFIG_LTC3882 0xD0 LTC3882 channel-specific configuration. R/W Byte Y
Reg
MFR_CONFIG_ALL_LTC3882 0xD1 LTC3882 device-level configuration.
R/W Byte N
Reg
MFR_GPIO_PROPAGATE_
0xD2 Configure LTC3882 status propagation R/W Word Y
Reg
LTC3882
via GPIOn pins.
MFR_VOUT_AVP
0xD3 Specify V_OUT load line.
R/W Word Y
L11
MFR_PWM_MODE_LTC3882 0xD4 LTC3882 channel-specific PWM mode R/W Byte Y
Reg
control.
MFR_GPIO_RESPONSE
0xD5 PWM response when GPIOn pin is low. R/W Byte Y
Reg
MFR_OT_FAULT_RESPONSE 0xD6 Internal overtemperature fault response. R Byte N
Reg
UNITS NVM
V
V
A
°C
°C
%
kHz
W
V
l
l
l
l
l
l
l
l
%
l
l
l
DEFAULT
VALUE
0x22
V1.2
LTC
LTC3882
5.6V
0x599A
0x0000
0x0000
0x1D
0x01
0x6993
0%
0x8000
0x48
0xC0
0xC0
SEE
PAGE
85
86
86
88
89
89
90
90
90
90
89
68
100
100
100
76
99
99
99
99
99
99
99
99
73
69
97
77
74
97
94
3882f
38
For more information www.linear.com/LTC3882