LT3694IUFD-1#PBF

Overview

The LT3694IUFD-1#PBF is a monolithic power management IC featuring one synchronous buck converter and two low-dropout linear regulators. It operates with an input voltage range of 4 V to 36 V and delivers up to 2.6 A from the buck output. The adjustable output voltage spans from 750 mV to 16 V. Integrated features include a programmable switching frequency between 250 kHz and 2.5 MHz, soft-start capability, and thermal regulation. The device supports shutdown mode with a quiescent current of 1 mA and functions within an operating temperature range of -40°C to +125°C.

Feature Summary

• Integrates a high-current synchronous buck regulator with dual precision LDOs in a single compact package.
• Supports wide input voltage ranges suitable for industrial and automotive bus architectures.
• Includes built-in protection mechanisms such as thermal regulation and soft-start control.

Applications

• Industrial automation controllers requiring multiple regulated voltage rails
• Automotive infotainment and instrumentation systems
• Distributed power supply architectures in telecommunications equipment

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches the required electrical characteristics and packaging format. Request original manufacturer documentation to validate lot traceability and RoHS compliance status before integration into production designs.

Selection Notes

Evaluate the combined current requirements of all three outputs against the thermal dissipation capabilities of the QFN-28 package. Ensure the selected switching frequency aligns with external inductor and capacitor availability while meeting electromagnetic interference constraints. Verify that the input voltage profile remains within the specified operational limits under all transient conditions.

Part Context

This component belongs to the LT3694 family of mixed-signal power management solutions designed for space-constrained applications. It consolidates multiple power stages into a single footprint, reducing board area compared to discrete solutions. The device is manufactured using advanced CMOS processes optimized for efficiency and thermal performance in dense electronic assemblies.

Replacement Considerations

LT3694EUFD#PBF and LT3694EUFD-1#PBF are documented parameter-equivalent alternatives within the same product family.