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LTC2972 Datasheet(PDF) 25 Page - Linear Technology |
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LTC2972 Datasheet(HTML) 25 Page - Linear Technology |
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25 / 112 page  LTC2972 25 2972fa For more information www.linear.com/LTC2972 Note: The data format abbreviations are detailed at the end of this table Summary Table COMMAND NAME CMD CODE DESCRIPTION TYPE PAGED DATA FORMAT UNITS EEPROM DEFAULT VALUE: FLOAT HEX REF PAGE PAGE 0x00 Channel or page currently selected for any command that supports paging. R/W Byte N Reg 0x00 31 OPERATION 0x01 Operating mode control. On/Off, Margin High and Margin Low. R/W Byte Y Reg Y 0x00 37 ON_OFF_CONFIG 0x02 CONTROL pin and PMBus on/off command setting. R/W Byte Y Reg Y 0x1E 38 CLEAR_FAULTS 0x03 Clear any fault bits that have been set. Send Byte Y NA 68 WRITE_PROTECT 0x10 Level of protection provided by the device against accidental changes. R/W Byte N Reg Y 0x00 32 STORE_USER_ALL 0x15 Store entire operating memory to EEPROM. Send Byte N NA 46 RESTORE_USER_ALL 0x16 Restore entire operating memory from EEPROM. Send Byte N NA 46 CAPABILITY 0x19 Summary of PMBus optional communication protocols supported by this device. R Byte N Reg 0xB0 88 VOUT_MODE 0x20 Output voltage data format and mantissa exponent (2–13). R Byte Y Reg 0x13 52 VOUT_COMMAND 0x21 Servo target. Nominal DC/DC converter output voltage setpoint. R/W Word Y L16 V Y 1.0 0x2000 53 VOUT_MAX 0x24 Upper limit on the output voltage the unit can command regardless of any other commands. R/W Word Y L16 V Y 4.0 0x8000 53 VOUT_MARGIN_HIGH 0x25 Margin high DC/DC converter output voltage setting. R/W Word Y L16 V Y 1.05 0x219A 53 VOUT_MARGIN_LOW 0x26 Margin low DC/DC converter output voltage setting. R/W Word Y L16 V Y 0.95 0x1E66 53 VIN_ON 0x35 Input voltage above which power conversion can be enabled. R/W Word N L11 V Y 10.0 0xD280 49 VIN_OFF 0x36 Input voltage below which power conversion is disabled. Both VOUT_EN pins go off immediately or sequence off after TOFF_ DELAY (See Mfr_config_track_enn). R/W Word N L11 V Y 9.0 0xD240 49 IOUT_CAL_GAIN 0x38 The nominal resistance of the current sense element in mΩ. R/W Word Y L11 mΩ Y 1.0 0xBA00 54 IOUT_CAL_OFFSET 0x39 Offset applied to the current sense measurement in Amps. R/W Word Y L11 A Y 0 0x8000 54 VOUT_OV_FAULT_LIMIT 0x40 Output overvoltage fault limit. R/W Word Y L16 V Y 1.1 0x2333 53 VOUT_OV_FAULT_RESPONSE 0x41 Action to be taken by the device when an output overvoltage fault is detected. R/W Byte Y Reg Y 0x80 64 VOUT_OV_WARN_LIMIT 0x42 Output overvoltage warning limit. R/W Word Y L16 V Y 1.075 0x2266 49 VOUT_UV_WARN_LIMIT 0x43 Output undervoltage warning limit. R/W Word Y L16 V Y 0.925 0x1D9A 49 PMBus COMMAND SUMMARY |
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