LTC2974IUP#PBF

LTC2974 is a 4-channel power system manager used to sequence, trim (servo), margin, supervise, manage faults, provide telemetry and create fault logs. PMBus commands support power supply sequencing, precision point-of-load voltage adjustment and margining. DACs use a proprietary soft-connect algorithm to minimize supply disturbances. Supervisory functions include over and under current, voltage and temperature threshold limits for four power supply output channels as well as over and under voltage threshold limits for a single power supply input channel. Programmable fault responses can disable the power supplies 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. It is used in application such as computers and network servers, industrial test and measurement, high reliability systems, medical Imaging, video etc.

• Manage faults, monitor telemetry and create fault logs
• PMBus™ compliant command set
• Supported by LTpowerPlay® GUI
• Margin or trim supplies to within 0.25% of target
• Fast OV/UV supervisors per channel, fast output current supervisors per channel
• Operate autonomously without additional software, external temperature and input voltage supervisors
• I²C/SMBus serial interface, initialization time is 30ms typical
• Operating junction temperature -40°C to 105°C
• Package style is 64-lead plastic QFN

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