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LTC2977 Datasheet(PDF) 105 Page - Analog Devices |
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LTC2977 Datasheet(HTML) 105 Page - Analog Devices |
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105 / 138 page  LTM4664A 105 Rev. 0 For more information www.analog.com PMBus COMMAND DETAILS TEMPERATURE External Temperature Calibration COMMAND NAME CMD CODE DESCRIPTION TYPE PAGED DATA FORMAT UNITS NVM DEFAULT VALUE MFR_TEMP_1_GAIN 0xF8 Sets the slope of the external temperature sensor. R/W Word Y CF Y 0.995 0x3FAE MFR_TEMP_1_OFFSET 0xF9 Sets the offset of the external temperature sensor. R/W Word Y L11 C Y 0.0 0x8000 MFR_TEMP_1_GAIN The MFR_TEMP_1_GAIN command will modify the slope of the external temperature sensor to account for nonidealities in the element and errors associated with the remote sensing of the temperature in the inductor. This command has two data bytes and is formatted in 16-bit 2’s complement integer. The effective gain adjustment is N • 2–14. The nominal value is 1. MFR_TEMP_1_OFFSET The MFR_TEMP_1_OFFSET command will modify the offset of the external temperature sensor to account for noni- dealities in the element and errors associated with the remote sensing of the temperature in the inductor. This command has two data bytes and is formatted in Linear_5s_11s format. External Temperature Limits COMMAND NAME CMD CODE DESCRIPTION TYPE PAGED DATA FORMAT UNITS NVM DEFAULT VALUE OT_FAULT_LIMIT 0x4F Power stage overtemperature fault limit. R/W Word Y L11 C Y 128 0xF200 OT_WARN_LIMIT 0x51 Power stage overtemperature warning limit. R/W Word Y L11 C Y 125 0xEBE8 UT_FAULT_LIMIT 0x53 Power stage undertemperature fault limit. R/W Word Y L11 C Y –45 0xE530 OT_FAULT_LIMIT The OT_FAULT_LIMIT command sets the value of the external sense temperature measured by the ADC, in degrees Celsius, which causes an overtemperature fault. The READ_TEMPERATURE_1 value will be used to determine if this limit has been exceeded. This command has two data bytes and is formatted in Linear_5s_11s format. OT_WARN_LIMIT The OT_WARN_LIMIT command sets the value of the external sense temperature measured by the ADC, in degrees Celsius, which causes an overtemperature warning. The READ_TEMPERATURE_1 value will be used to determine if this limit has been exceeded. |
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