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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTC2972 датащи(PDF) 1 Page - Linear Technology |
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LTC2972 датащи(HTML) 1 Page - Linear Technology |
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1 / 112 page  LTC2972 1 2972fa For more information www.linear.com/LTC2972 TYPICAL APPLICATION FEATURES DESCRIPTION 2-Channel PMBus Power System Manager Featuring Programmable Power Good Outputs TheLTC®2972isa2-channelPowerSystemManagerused to sequence, trim (servo), margin, supervise, manage faults, provide telemetry and create fault logs. PMBus commands support power supply sequencing, precision point-of-loadvoltageadjustmentandmargining.DACsuse a proprietary soft-connect algorithm to minimize supply disturbances.Supervisoryfunctionsincludeoverandunder voltage and temperature threshold limits for two power supply output channels as well as over and under voltage threshold limits for a single power supply input channel. Programmablefaultresponsescandisablethepowersup- plies with optional retry after a fault is detected. Faults that disable a power supply can automatically trigger black box EEPROM storage of fault status and associated telemetry. An internal 16-bit ADC monitors two output voltages, two output currents, two external temperatures, input voltage and current, and die temperature. Input power, energy, and output power are also calculated. A programmable watchdog timer monitors microprocessor activity for a stalled condition and resets the microprocessor if neces- sary.Asinglewirebussynchronizespowersuppliesacross multiple ADI Power System Management (PSM) devices. Configuration EEPROM with ECC supports autonomous operation without additional software. All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. Patents including 7382303, 7420359, 8648623 and 8920026. APPLICATIONS n Sequence, Trim, Margin and Supervise Two Power Supplies n Manage Faults, Monitor Telemetry n PMBus Compliant Command Set n Supported by LTpowerPlay® GUI n Margin or Trim Supplies to Within 0.25% of Target n Monitor Input Current (±1%) and Accumulate Energy n Fast OV/UV Supervisors per Channel n Coordinate Sequencing and Fault Management Across Multiple ADI PSM Devices n Automatic Fault Logging to Internal EEPROM n Operate Autonomously Without Additional Software n Configurable Power Good Output Pins n Accurate Monitoring of Output Voltage, Output Current, Temperature, and Input Voltage and Current n 1.8V to 3.3V I2C/SMBus Serial Interface n Connect Directly to Regulator IMON Pins n Can Be Powered from 3.3V, or 4.5V to 15V n Available in 44-Pin 6mm × 7mm QFN Package n Computers and Network Servers n Industrial Test and Measurement n High Reliability Systems n Video and Medical Imaging DCIN RSNS R20 R10 R30 R20 R10 R30 LOAD VOUT VFB VIN RUN DC/DC CONVERTER VSENSEM1 VDAC1 VOUT_EN1 TSENSE1 AUXFAULTB VDD33* IBC EN IN OUT 4.5V ≤ VIBUS ≤ 15V FAULT PWRGD SDA SCL ALERTB CONTROL PMBus INTERFACE *LTC2972 MAY ALSO BE POWERED DIRECTLY FROM AN EXTERNAL 3.3V SUPPLY LTC2972 PG1 ISENSEP0 VSENSEM0 VDAC0 VOUT_EN0 TSENSE0 PG0 NOTE: SOME DETAILS OMITTED FOR CLARITY ISENSEM0 ISENSEP1 ISENSEM1 VSENSEP1 VSENSEP0 VDDIO LOAD VOUT VFB VIN RUN DC/DC CONVERTER RSNS 2972 TA01a Closed-Loop Servo Error vs Temperature 80 PARTS SOLDERED DOWN VIN = 1.0V TEMPERATURE (°C) –50 –25 0 25 50 75 100 –0.25 –0.20 –0.15 –0.10 –0.05 0.00 0.05 0.10 0.15 0.20 0.25 2972 TA01b |
Аналогичный номер детали - LTC2972 |
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Аналогичное описание - LTC2972 |
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