LT3502IDC#TRMPBF

Overview

The LT3502IDC#TRMPBF is a synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range from 3V to 40V and provides a single adjustable output ranging from 0.8V to 36V. The device delivers up to 500mA of output current at a fixed switching frequency of 1.1MHz. Packaged in an 8-WFDFN (2x2) exposed pad surface-mount package, it supports junction temperatures between -40°C and 125°C. This component functions as a positive buck converter IC designed for efficient power management applications.

Feature Summary

• Integrates high-side and low-side N-channel power switches for synchronous rectification
• Includes internal soft-start circuitry to limit inrush current during startup
• Features cycle-by-cycle current limiting and thermal shutdown protection
• Supports external synchronization to reduce system noise

Applications

• Point-of-load regulation for embedded systems
• Power supply stages for microprocessors and FPGAs
• Battery-powered portable equipment
• Industrial control system power distribution

Procurement Notes

Verify the specific suffix TRMPBF indicates tape and reel packaging when ordering. Confirm that the IDC designation corresponds to the 8-DFN package variant required for your PCB layout. Ensure compatibility with Analog Devices' RoHS compliance standards prior to final procurement approval.

Selection Notes

Select this regulator when input voltages exceed standard LDO limits or require high efficiency across wide load ranges. The 1.1MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Verify that the maximum output voltage requirement does not exceed 36V and that the 500mA current rating meets peak load demands.

Part Context

This part belongs to the LT3502 family of synchronous buck converters. It is distinct from other Analog Devices regulators by its specific 40V input capability and 1.1MHz operating frequency. The DC suffix denotes the fixed 8-pin DFN package configuration used in compact designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.