LT3645IUD#TRPBF

Overview

The LT3645IUD#TRPBF is a dual-output DC/DC converter integrating a synchronous buck regulator and a low-dropout linear regulator (LDO). It operates from an input voltage range of 3.6V to 36V. The first output provides 0.8V to 16V at up to 500mA, while the second output supplies 0.8V to 8V at up to 200mA. The device features a fixed switching frequency of 750kHz and is housed in a 16-lead QFN package measuring 3mm by 3mm.

Feature Summary

• Integrates a high-efficiency synchronous step-down converter with a precision LDO on a single chip
• Supports wide input voltage ranges suitable for industrial power distribution networks
• Includes thermal regulation and current limit protection for reliable operation under fault conditions

Applications

• Industrial automation control systems requiring isolated or multi-rail power generation
• Portable instrumentation powered by battery packs or external adapters
• Distributed power architectures in embedded computing environments

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors. Confirm lot traceability and RoHS compliance status prior to integration. Ensure storage conditions maintain moisture sensitivity level integrity. Review latest datasheet revisions for pin compatibility updates.

Selection Notes

Select this component when designing systems needing both high-current switching regulation and low-noise analog supply rails from a single wide-voltage source. Evaluate thermal performance based on total output power dissipation within the compact QFN footprint.

Part Context

This part belongs to the LT3645 family of mixed-mode power management ICs. It combines the efficiency of switching topology with the simplicity of linear regulation. The IUD suffix indicates an industrial temperature grade ranging from -40°C to +125°C.

Replacement Considerations

LT3645EUD#PBF