LT3976IUDD#TRPBF

Overview

The LT3976IUDD#TRPBF is a monolithic buck switching regulator from Analog Devices. It accepts an input voltage range of 4.3V to 40V and delivers up to 5A output current. The device features adjustable switching frequency, low quiescent current consumption of 3.3µA at no load, and operates within a temperature range of -40°C to +125°C. Packaged in a thermally enhanced 16-lead DFN (4mm x 4mm) with exposed pad, it supports wide input voltage applications requiring high efficiency and compact design.

Feature Summary

• Adjustable switching frequency allows optimization for size and efficiency
• Low quiescent current design minimizes power loss during light load conditions
• Wide input voltage range accommodates various supply sources
• Thermally enhanced package facilitates heat dissipation in compact layouts

Applications

• Point-of-load regulation for industrial equipment
• Power supplies for embedded systems
• Battery-powered devices requiring efficient step-down conversion
• Automotive electronics with wide input voltage variations

Procurement Notes

Verify the exact part number suffix matches your requirements, as Analog Devices uses specific codes for temperature grade and packaging. Confirm RoHS compliance status through official documentation. Check for any recent lifecycle notices or obsolescence warnings directly from Analog Devices or authorized distributors before finalizing procurement decisions.

Selection Notes

Select this component when a wide input voltage range up to 40V is required alongside high output current capability. Consider the adjustable frequency feature if optimizing for external component size or electromagnetic interference constraints. Ensure the thermal performance of the DFN package suits your application's ambient temperature and board layout conditions.

Part Context

The LT3976 belongs to Analog Devices' family of high-efficiency synchronous buck regulators. It complements other parts like the LT3970 by offering higher current capacity while maintaining low quiescent current characteristics. This series targets applications needing robust performance across varying input voltages without sacrificing efficiency.

Replacement Considerations

Direct substitutes may include other Analog Devices buck converters with similar current ratings and input voltage ranges, such as the LT3970 series variants, provided they meet the specific output current and thermal requirements of the design.