LTC2977IUP

Power Supply Controllers, Monitors Overview

The LTC2977IUP is an 8-channel PMBus power system manager designed for accurate voltage measurement and monitoring. It operates within a supply voltage range of 3.13 V to 15 V, with a typical operating current of 10 mA. The device supports high-side or low-side sensing configurations and functions reliably across an industrial temperature range from -40°C to +105°C. Packaged in a 64-pin QFN (9x9 mm) format, it integrates digital control capabilities for complex power management architectures.

Power Supply Controllers, Monitors Feature Summary

• Provides eight independent channels for comprehensive power system monitoring and regulation via the PMBus interface.
• Features high-accuracy output voltage measurement capabilities to ensure precise system status tracking.
• Supports flexible current sensing through configurable high-side or low-side detection methods.

Power Supply Controllers, Monitors Applications

• Multi-rail server and storage system power distribution
• Telecommunications infrastructure power management
• Industrial equipment requiring detailed power telemetry

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix designation when ordering, as variants such as #TRPBF indicate tape-and-reel packaging while #PBF denotes tube packaging. Confirm that the I-grade temperature rating aligns with your operational environment requirements. Ensure compatibility with existing PMBus controller software and hardware interfaces before finalizing procurement specifications.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing systems requiring centralized monitoring of multiple power rails with high accuracy. The 64-pin QFN package suits space-constrained layouts. Consider the 10 mA supply current impact on overall system efficiency. Verify that the 15 V maximum supply voltage covers all monitored rail peaks. Evaluate thermal performance within the specified -40°C to +105°C range for your enclosure design.

Power Supply Controllers, Monitors Part Context

This part belongs to the Analog Devices LTC2977 family of power system managers. It complements other devices like the LTC2972, LTC2974, and LTC2975, which offer varying channel counts. The DC1540B evaluation board is available to assist in development and testing of this specific controller architecture.

Power Supply Controllers, Monitors Replacement Considerations

Direct substitutes include other members of the LTC2977 series, such as the LTC2977CUP#PBF for commercial temperature grades. Cross-family alternatives may exist but require careful verification of pinout and feature parity.