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LTM4676A 数据表(PDF) 90 Page - Linear Technology |
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LTM4676A 数据表(HTML) 90 Page - Linear Technology |
90 / 136 page LTM4676A 90 4676afa For more information www.linear.com/LTM4676A appenDix c: pMbus coMManD DeTails OPERATION The OPERATION command is used to turn the unit on and off in conjunction with the input from the RUNn pins. It is also used to cause the unit to set the output voltage to the upper or lower MARGIN VOLTAGEs. The unit stays in the commanded operating mode until a subsequent OPERATION command or change in the state of the RUNn pin instructs the device to change to another mode. If the part is stored in the MARGIN_LOW/HIGH state, the next MFR_RESET or RESTORE_USER_ALL or SVIN power cycle will ramp to that state. If the OPERATION command is modified, for example ON is changed to MARGIN_LOW, the output will move at a fixed slope set by the VOUT_TRANSITION_RATE. The default operation command is sequence off. Margin High (Ignore Faults) and Margin Low (Ignore Faults) operations are not supported by the LTM4676A. The part defaults to the Sequence Off state. This command has one data byte. Table 23. OPERATION Command Detail Register OPERATION Data Contents When On_Off_Config_Use_PMBus Enables Operation_Control SYMBOL Action Value BITS FUNCTION Turn off immediately 0x00 Turn on 0x80 Margin Low 0x98 Margin High 0xA8 Sequence off 0x40 OPERATION Data Contents When On_Off_Config is Configured Such That OPERATION Command Is Not Used to Command Channel On or Off SYMBOL Action Value BITS FUNCTION Output at Nominal 0x80 Margin Low 0x98 Margin High 0xA8 Note: Attempts to write a reserved value will cause a CML fault. MFR_RESET ThiscommandprovidesameansbywhichtheusercanperformaresetoftheLTM4676A.IdenticaltoRESTORE_USER_ALL. This write-only command has no data bytes. |
类似零件编号 - LTM4676A |
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类似说明 - LTM4676A |
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