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LTM4676A Scheda tecnica(PDF) 89 Page - Linear Technology

Il numero della parte LTM4676A
Spiegazioni elettronici  Dual 13A or Single 26A 關Module Regulator with Digital Power System Management
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Produttore elettronici  LINER [Linear Technology]
Homepage  http://www.linear.com
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LTM4676A
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For more information www.linear.com/LTM4676A
appenDix c: pMbus coMManD DeTails
MFR_CONFIG_ALL
General purpose configuration command common to multiple LTC products
BIT
MEANING
7
Enable Fault Logging
6
Ignore Resistor Configuration Pins
5
Disable CML fault for Quick Command message
4
Disable SYNC out
3
Enable 255ms Time Out
2
A valid PEC required for PMBus writes to be accepted. If this bit is not set,
the part will accept commands with invalid PEC.
1
Enable the use of PMBus clock stretching
0
Enables a low to high transition on either RUN pin to issue a
CLEAR_FAULTS command
This command has one data byte.
ON/OFF/MARGIN
COMMAND NAME
CMD
CODE
DESCRIPTION
TYPE
PAGED
DATA
FORMAT UNITS NVM
DEFAULT
VALUE
ON_OFF_CONFIG
0x02
RUN pin and PMBus bus on/off command configuration.
R/W Byte
Y
Reg
Y
0x1F
OPERATION
0x01
Operating mode control. On/off, margin high and margin
low.
R/W Byte
Y
Reg
Y
0x80
MFR_RESET
0xFD
Commanded reset without requiring a power-down.
Identical to RESTORE_USER_ALL.
Send Byte
N
NA
ON_OFF_CONFIG
The ON_OFF_CONFIG command configures the combination of RUNn pin input and serial bus commands needed to
turn the unit on and off. This includes how the unit responds when power is applied.
Table 22. Supported Values
VALUE
MEANING
0x1F
OPERATION value and RUNn pin must both command the device to start/run. Device executes immediate off when commanded off.
0x1E
OPERATION value and RUNn pin must both command the device to start/run. Device uses TOFF_ command values when
commanded off.
0x17
RUNn pin control with immediate off when commanded off. OPERATION on/off control ignored.
0x16
RUNn pin control using TOFF_ command values when commanded off. OPERATION on/off control ignored.
Note: A high on the RUNn pin is always required to start power conversion. Power conversion will always stop with a low on RUNn.
Programming an unsupported ON_OFF_CONFIG value will generate a CML fault and the command will be ignored.
This command has one data byte.


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