LT3508HUF#PBF

Overview

The LT3508HUF#PBF is a dual-channel monolithic switching regulator manufactured by Analog Devices Inc. It integrates two high-efficiency buck converters within a single package, delivering up to 1.4A of output current per channel. The device operates from an input voltage range of 3.7V to 36V and supports adjustable output voltages starting from 0.8V. Designed for surface-mount applications, it utilizes a 16-lead HUF (QFN) package with an exposed thermal pad to facilitate heat dissipation. The integrated architecture allows for independent control of each channel, making it suitable for powering multiple rails in space-constrained designs.

Feature Summary

• Integrates two independent synchronous buck regulators into a single compact package
• Supports wide input voltage ranges suitable for various power supply architectures
• Features adjustable output voltage control via external resistor networks
• Includes built-in thermal regulation and current limit protection mechanisms

Applications

• Portable equipment requiring multiple regulated voltage rails
• Industrial control systems with mixed logic and analog power needs
• Automotive infotainment and instrumentation modules
• Communication infrastructure powering baseband processors

Procurement Notes

Verify the specific suffix and tape-and-reel or tube packaging configuration against the official datasheet before ordering. Confirm that the component meets all required environmental standards and RoHS compliance specifications for your target market. Ensure that the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when a design requires two isolated or non-isolated buck outputs from a single controller to minimize board space. Consider the thermal performance requirements of the 16-lead QFN package relative to the expected load currents. Evaluate the input voltage range compatibility with the system's primary power source to ensure stable operation under all conditions.

Part Context

This part belongs to the LT3508 family of dual-channel switching regulators designed for high-density power solutions. It serves as a consolidated alternative to using separate discrete controllers and MOSFETs for dual-rail applications. The device simplifies layout and reduces component count compared to traditional multi-regulator approaches.

Replacement Considerations

Consult official Analog Devices substitution guides for verified alternatives. Cross-reference pinouts and electrical characteristics carefully if considering competitors. Verify that any substitute maintains the same dual-channel topology and current capabilities.