LT3976EUDD#PBF

Overview

The LT3976EUDD#PBF is a monolithic step-down switching regulator manufactured by Analog Devices Inc. It accepts input voltages up to 40V and delivers an output current of 5A. The device features an adjustable switching frequency ranging from 200kHz to 2MHz, allowing for optimization of external component size and efficiency. It incorporates a low quiescent current design that consumes only 3.3µA during regulation with no load. The component is housed in a thermally enhanced 16-lead DFN package.

Feature Summary

• Integrated high-current synchronous buck topology for efficient voltage conversion
• Adjustable switching frequency capability to optimize magnetic component selection
• Ultra-low quiescent current operation to minimize power consumption in standby modes

Applications

• Industrial point-of-load regulation
• Distributed power systems
• Battery-powered equipment requiring high efficiency

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout and thermal characteristics. Confirm RoHS compliance status through the manufacturer's current datasheet. Ensure the ordering part number matches the exact package variant required for your PCB layout. Cross-reference the manufacturer's lifecycle status to determine long-term availability.

Selection Notes

Select this component when a wide input voltage range up to 40V is required alongside high continuous output current. The adjustable frequency feature allows designers to balance between electromagnetic interference filtering requirements and passive component physical size. Evaluate thermal performance based on the expected ambient temperature and copper area available on the printed circuit board.

Part Context

This device belongs to the LT3976 series of high-efficiency DC-to-DC converters. It is designed for applications demanding robust performance under varying load conditions. The series integrates protection features typical of modern switching regulators, ensuring reliable operation in industrial environments.

Replacement Considerations

LT3975EUJ#PBF: Lower current capacity (2.5A) but similar input range. LT3995EUH#PBF: Higher input voltage rating (60V) with reduced output current (3A). Verify pin compatibility and thermal requirements before substitution.