LT3514IFE#PBF

Overview

The LT3514IFE#PBF is a triple step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.2V to 36V and provides three adjustable positive outputs, each capable of delivering up to 2A. The device features a switch frequency range from 270kHz to 2.1MHz and includes a minimum output voltage setting of 0.8V. It is housed in a 24-TSSOP package with an exposed pad for thermal management. The component supports a shutdown function and operates within a junction temperature range of -40°C to 125°C.

Feature Summary

• Integrates three independent buck converters into a single compact package
• Supports high duty cycle operation for efficient low dropout performance
• Features adjustable switching frequency to optimize external component size
• Includes integrated power switches rated for high continuous current

Applications

• Multi-rail power distribution systems requiring independent regulation
• Industrial control boards needing multiple voltage domains
• Telecommunications infrastructure power supplies
• Automotive electronics with varying load requirements

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence before procurement. Confirm the 24-TSSOP package dimensions match your PCB footprint design. Ensure thermal relief plans account for the exposed pad requirement on this surface-mount device. Cross-reference the manufacturer's latest datasheet for any recent pinout or electrical specification updates.

Selection Notes

Select this component when space constraints require integrating three separate regulators into one footprint. It is suitable for designs where input voltages vary significantly between 3.2V and 36V. Consider the thermal dissipation capabilities of the 24-TSSOP package relative to your total load current. Evaluate the need for independent output adjustment versus fixed voltage alternatives.

Part Context

This part belongs to the LT3514 family of triple buck regulators from Analog Devices. It is designed for applications requiring multiple isolated or non-isolated voltage rails from a single source. The device complements other linear and switching regulators in the company's portfolio by offering high efficiency and compact integration for complex power architectures.

Replacement Considerations

LT3514EFE#PBF is a verified substitute with identical electrical specifications but packaged in an EF (QFN) format instead of TSSOP. Verify that the target PCB layout accommodates the different thermal pad configuration of the QFN package.