LT3502AIDC#TRPBF

Overview

The LT3502AIDC#TRPBF is a synchronous step-down switching regulator IC manufactured by Analog Devices Inc. It operates with an input voltage range of 3V to 40V and provides a single adjustable output from 0.8V to 36V. The device delivers up to 1.5A of output current with a fixed internal switching frequency of 1.1MHz. It utilizes an 8-lead DFN package with exposed pad for efficient thermal dissipation.

Feature Summary

• Integrates high-side and low-side N-channel power switches for high efficiency without external diodes
• Features constant-frequency current mode control architecture for fast transient response
• Includes programmable soft-start to limit inrush current during startup
• Provides cycle-by-cycle current limiting and thermal shutdown protection

Applications

• Point-of-load regulation for industrial equipment
• Power supply stages for embedded systems
• Battery-powered devices requiring efficient voltage conversion
• Telecommunications infrastructure power distribution

Procurement Notes

Verify the specific suffix 'A' indicates the enhanced temperature or performance grade compared to standard variants. Confirm the '#TRPBF' designation ensures lead-free packaging compliant with RoHS directives. Cross-reference the manufacturer part number directly with official Analog Devices documentation to ensure authenticity and correct revision level before procurement.

Selection Notes

Select this component when a compact solution is required for converting higher bus voltages down to lower logic levels. The 1.1MHz frequency allows for smaller passive components compared to lower frequency alternatives. Ensure the application requires a single positive output within the specified voltage range and that the 1.5A current capability meets the load requirements.

Part Context

This part belongs to the LT3502 family of synchronous buck regulators designed for space-constrained applications. It shares architectural similarities with other members of the series but offers specific electrical characteristics tailored for general-purpose DC-DC conversion tasks in industrial and commercial environments.

Replacement Considerations

LT3502IDC#TRPBF