LT3507AEUHF#PBF

Overview

The LT3507AEUHF#PBF is a high-efficiency, triple-output DC/DC converter featuring three integrated current-mode buck regulators and one low-dropout linear regulator (LDO). It operates with an input voltage range of 4V to 36V. The primary output delivers up to 2.7A, while the two auxiliary outputs provide up to 1.8A each. The adjustable switching frequency ranges from 900kHz to 1.1MHz. Outputs are adjustable from 0.8V to 32.4V. The device utilizes a 38-pin QFN package measuring 5mm by 7mm with enhanced thermal performance.

Feature Summary

• Integrates three synchronous buck converters and one LDO in a single compact package
• Features inverted switching operation for the main output to reduce input ripple current
• Includes independent run, track/soft-start, and power-good indicators for simplified sequencing
• Supports ceramic capacitors on all outputs to minimize system component count

Applications

• Automotive electronic systems requiring multi-rail power distribution
• Industrial control equipment with diverse voltage requirements
• Communication base station power management modules
• Distributed power architectures in embedded systems

Procurement Notes

Verify the specific suffix PBF confirms lead-free compliance and RoHS standards before procurement. Confirm the EUHF package designation matches the required 38-QFN footprint and thermal pad specifications for the target PCB layout. Ensure the AE grade meets the necessary automotive temperature operating range requirements for the intended application environment.

Selection Notes

Select this component when a single IC solution is needed for multiple voltage rails in space-constrained designs. It is suitable for applications requiring wide input voltage ranges and synchronized switching frequencies to manage EMI. Consider the thermal dissipation capabilities of the QFN package relative to the total load current and ambient conditions during the design phase.

Part Context

This part belongs to the LT3507A family of monolithic switching regulators manufactured by Analog Devices Inc. It represents a highly integrated power management solution designed to replace discrete component designs. The series is engineered for applications demanding high efficiency, small form factor, and robust performance across varying load and line conditions.

Replacement Considerations

LT3507AHUHF#PBF: Identical electrical specifications and functionality but rated for extended industrial temperature range up to 150°C instead of automotive limits.