LT3501EFE#PBF

Overview

The LT3501EFE#PBF is a dual monolithic synchronous step-down switching regulator manufactured by Analog Devices Inc. It integrates two independent buck converters within a single package, delivering up to 3A of output current per channel. The device supports an input voltage range from 3.1V to 25V and provides adjustable output voltages starting from 0.8V up to 23.75V. Operating with a switchable frequency between 250kHz and 1.5MHz, it utilizes a TSSOP-EP-20 surface-mount package with an exposed pad for thermal management. The component functions as a positive-output DC-DC converter suitable for various power supply applications.

Feature Summary

• Integrates two independent high-efficiency synchronous buck regulators in a compact footprint
• Supports wide input voltage ranges compatible with standard bus voltages
• Features adjustable switching frequencies to optimize performance for specific design requirements
• Includes internal compensation and soft-start circuitry to simplify external component count

Applications

• Point-of-load regulation for embedded systems
• Power distribution networks requiring multiple voltage rails
• Industrial control systems with varying input sources
• Telecommunications equipment power supplies

Procurement Notes

Verify the suffix #PBF indicates lead-free compliance and RoHS adherence before procurement. Confirm the package type matches the target PCB footprint, specifically the 20-TSSOP with exposed pad. Ensure the ordering information aligns with the required tape and reel or tube packaging options available from authorized distributors. Cross-reference the manufacturer part number to avoid confusion with similar variants in the LT3501 family.

Selection Notes

Select this component when dual isolated or non-isolated buck outputs are required from a single IC. Consider the thermal dissipation capabilities provided by the exposed pad for high-current applications. Evaluate the switching frequency range against electromagnetic interference constraints and inductor size requirements. Verify that the input voltage profile remains within the specified operational limits during all transient conditions.

Part Context

This device belongs to the LT3501 series of dual synchronous step-down regulators designed for space-constrained applications. It shares functional similarities with other multi-channel power management ICs but distinguishes itself through integrated synchronous rectification and flexible frequency control. The product line targets efficient power conversion in portable and industrial electronics where board area is limited.

Replacement Considerations

LT3501IFE#TRPBF is documented as a parameter-equivalent substitute offering identical electrical specifications. Verify package compatibility and pinout alignment before substitution. Ensure the replacement variant meets the same environmental and regulatory standards required for the original design.