LT3694EUFD-1#PBF

Overview

The LT3694EUFD-1#PBF is a monolithic power management IC featuring one high-current buck converter and two low-dropout linear regulators. It operates with an input voltage range of 4 V to 36 V. The primary buck output delivers up to 2.6 A with an adjustable voltage from 750 mV to 16 V. The device supports switching frequencies between 250 kHz and 2.5 MHz. It includes a shutdown function and maintains a quiescent current of 1 mA. The component is housed in a 28-lead QFN package rated for operation between -40°C and +125°C.

Feature Summary

• Integrates a single synchronous buck regulator with dual LDO outputs in a compact monolithic design.
• Supports wide input voltage ranges suitable for industrial and telecom power distribution systems.
• Features programmable switching frequency to optimize efficiency and external component size.
• Includes thermal regulation and cycle-by-cycle current limiting for robust protection.

Applications

• Industrial control systems requiring multiple regulated voltage rails
• Telecommunications infrastructure power supplies
• Embedded computing platforms with mixed analog and digital load requirements

Procurement Notes

Verify the specific suffix EUFD-1 against the official Analog Devices datasheet to confirm pinout and electrical characteristics match your schematic. Confirm RoHS compliance status through the manufacturer's declaration. Check for obsolescence notices or lifecycle changes directly on the Analog Devices website before finalizing procurement plans.

Selection Notes

Select this part when a single IC solution is needed to generate three distinct voltage rails from a 4V to 36V source. Ensure the thermal design accommodates the QFN-28 package dissipation limits at maximum load. Verify that the required output voltages fall within the 750 mV to 16 V adjustment range of the buck converter.

Part Context

This component belongs to the LT3694 family of integrated power managers. It shares functional similarities with the LT3694IUFD-1#PBF but differs in temperature grade specifications. The series is designed to simplify board space constraints by combining switching and linear regulation technologies into a single footprint.

Replacement Considerations

LT3694IUFD-1#PBF is a verified alternative within the same family, differing primarily in extended industrial temperature rating verification.