LT3504EUFD#PBF

Overview

The LT3504EUFD#PBF is a monolithic four-channel step-down switching regulator IC manufactured by Analog Devices Inc. It integrates four independent buck converters, each capable of delivering up to 1A of output current. The device supports an input voltage range from 5.4V to 40V and operates with a fixed switching frequency of 1MHz. Each channel features adjustable output voltages starting from 0.8V. The component utilizes a 28-lead WFQFN package with an exposed pad for thermal dissipation.

Feature Summary

• Integrates four independent synchronous buck regulators within a single monolithic package
• Supports 100% duty cycle operation to minimize dropout voltage between input and output
• Includes internal compensation and soft-start circuitry for simplified design implementation
• Features adjustable switching frequency synchronization capability

Applications

• Industrial systems requiring multiple regulated power rails from a high-voltage bus
• Automotive electronics utilizing 12V or 24V electrical architectures
• Distributed power supply boards in telecommunications infrastructure
• Embedded computing platforms needing isolated low-noise power generation

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm pinout compatibility and thermal specifications. Ensure that the procurement source provides valid traceability for RoHS compliance requirements. Cross-reference the exact part number with the latest datasheet revision to validate any potential manufacturing updates or packaging changes before finalizing acquisition.

Selection Notes

Select this component when a design requires four distinct regulated outputs derived from a single high-voltage source without external controller complexity. Evaluate the total thermal load across all channels to ensure adequate PCB copper area for heat dissipation. Confirm that the required output currents do not exceed the 1A limit per channel under maximum ambient temperature conditions.

Part Context

This integrated circuit belongs to the LT3504 family of multi-channel power management solutions designed for space-constrained applications. It consolidates the functionality of four separate buck regulators into one compact footprint, reducing overall bill of materials and board area compared to discrete implementations.

Replacement Considerations

LT3504IUFD#PBF: Verified alternative offering industrial temperature range specifications.