LTC2978ACUP

Power Supply Controllers, Monitors Overview

The LTC2978ACUP is an 8-channel PMBus power system manager manufactured by Analog Devices Inc. It features a QFN-64 package and operates within a commercial temperature range of 0°C to 70°C. The device supports I2C/SMBus interfaces and includes internal monitoring for eight output voltages, one input voltage, and chip temperature via a 16-bit ADC. It provides precise voltage regulation with servo capabilities and margining accuracy of 0.25%. The component is designed for power sequencing, fault management, and telemetry, utilizing an EEPROM for autonomous operation and black box fault recording.

Power Supply Controllers, Monitors Feature Summary

• Supports power sequencing, servo trimming, and margining for up to eight channels
• Includes internal 16-bit ADC for accurate voltage and temperature monitoring
• Features automatic black box EEPROM fault recording upon detection
• Provides programmable watchdog timer for microprocessor stall protection

Power Supply Controllers, Monitors Applications

• Computer systems
• Network servers
• Industrial test and measurement equipment
• High-reliability systems
• Medical imaging devices

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix ACUP against official documentation to confirm the exact temperature grade and package variant. Confirm current availability status as the base model may be discontinued or subject to supply constraints. Ensure compatibility with existing PCB footprints and PMBus software configurations before procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component when multi-channel power management and precise voltage regulation are required. Consider the 64-pin QFN package size for space-constrained designs. Verify that the 0°C to 70°C operating range meets the environmental requirements of the target application compared to industrial or extended variants.

Power Supply Controllers, Monitors Part Context

The LTC2978A series serves as a pin-compatible upgrade to the LTC2978, offering enhanced performance in power system management. It belongs to the Analog Devices PMIC family, specifically designed for complex power architectures requiring synchronized control and detailed telemetry across multiple rails.

Power Supply Controllers, Monitors Replacement Considerations

The LTC2978 is confirmed as a compatible substitute part number due to full pin compatibility.