LTC2977IUP#PBF

LTC2977 is a 8-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 overvoltage and undervoltage threshold limits for eight power supply output channels and one power supply input channel, as well as over and under temperature limits. 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 applications such as computers and network servers, industrial test and measurement, high reliability systems, medical imaging, video etc.

• PMBus™ compliant command set
• Supported by LTpowerPlay® GUI
• Margin or trim supplies to within 0.25% of target
• Fast OV/UV supervisors per channel, operate autonomously without additional software
• Coordinate sequencing and fault management across multiple LTC PSM devices
• Internal temperature and input voltage supervisors
• Accurate monitoring of eight output voltages, input voltage and internal die temperature
• I²C/SMBus serial interface, programmable watchdog timer
• 100% pin-compatible Upgrade to the LTC2978/LTC2978A
• Operating junction temperature is -40°C to 105°C, package style is 64-pin plastic QFN

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