DESCRIPTION
The LTC®2978A is an 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.

FEATURES
■ Sequence,Trim, Margin and Supervise Eight Power Supplies
■ Manage Faults, Monitor Telemetry and Create Fault Logs
■ PMBus Compliant Command Set
■ Supported by LTpowerPlay™ GUI
■ Margin or Trim Supplies to 0.25% Accuracy
■ Fast OV/UV Supervisors per Channel
■ Coordinate Sequencing and Fault Management
   Across Multiple Chips
■ Automatic Fault Logging to Internal EEPROM
■ Operate Autonomously without Additional Software
■ Internal Temperature and Input Voltage Supervisors
■ Accurate Monitoring of Eight Output Voltages, Input
   Voltage and Internal Die Temperature
■ I2C/SMBus Serial Interface
■ Can Be Powered from 3.3V, or 4.5V to 15V
■ Programmable Watchdog Timer
■ 100% Compatible with the LTC2978
■ Available in 64-pin 9mm × 9mm QFN Package

APPLICATIONS
■ Computers and Network Servers
■ Industrial Test and Measurement
■ High Reliability Systems
■ Medical Imaging
■ Video