LT3507IUHF#PBF

Overview

The LT3507IUHF#PBF is a monolithic power management IC featuring three synchronous buck converters and one low-dropout linear regulator. It operates from an input voltage range of 4V to 36V with adjustable outputs up to 32.4V. The device integrates a sequencer for controlled startup and shutdown, supporting automotive applications with extended temperature ratings. Packaged in a 38-lead QFN, it delivers high efficiency and compact solution size for complex power requirements.

Feature Summary

• Integrates three independent synchronous buck regulators and one LDO within a single package
• Includes internal sequencing logic for controlled power-up and power-down transitions
• Supports wide input voltage ranges suitable for industrial and automotive bus architectures

Applications

• Automotive infotainment systems requiring multiple regulated rails
• Industrial control units needing compact multi-output power solutions
• Telecommunications equipment utilizing standard bus voltages

Procurement Notes

Verify the specific suffix IUHF corresponds to the QFN-38 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure supply chain channels provide genuine components to avoid counterfeit risks associated with high-volume PMICs.

Selection Notes

Select this component when space constraints necessitate integrating multiple regulation stages into one footprint. Consider the thermal performance of the exposed pad design for high-current buck outputs. Evaluate the need for external synchronization if electromagnetic interference is a critical design factor.

Part Context

This part belongs to the LT3507A family of mixed-signal power management devices. It serves as a consolidated solution for applications previously requiring separate discrete regulators. The device simplifies board layout by reducing component count while maintaining independent control over each output channel.

Replacement Considerations

LT3507AHUHF#PBF offers identical functionality with an extended operating temperature range up to 150°C.