LT3694IUFD-1#TRPBF

Overview

The LT3694IUFD-1#TRPBF is a monolithic power management IC featuring one buck regulator and two low-dropout linear regulators. It operates with an input voltage range of 4 V to 36 V. The buck converter delivers up to 2.6 A output current with adjustable output voltages from 750 mV to 16 V. The device supports switching frequencies between 250 kHz and 2.5 MHz. It includes integrated sequencing logic for controlled startup and shutdown. The component is housed in a 28-pin QFN package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates a high-current buck converter with two independent LDOs for combined switching and linear regulation
• Features internal sequencing logic to manage the startup and shutdown order of multiple outputs
• Supports wide input voltage ranges suitable for industrial and automotive bus architectures

Applications

• Industrial equipment requiring multi-rail power distribution
• Automotive infotainment and control modules
• Telecommunications infrastructure power systems

Procurement Notes

Verify the suffix #TRPBF indicates tape and reel packaging, which differs from the tube-packaged #PBF variant. Confirm that the specific revision matches design requirements as manufacturing updates may occur. Check official Analog Devices documentation for RoHS compliance status and material declarations prior to finalizing procurement orders.

Selection Notes

Select this component when a single solution is needed to provide both switched and regulated linear rails. Ensure the required buck output current does not exceed 2.6 A. Verify that the desired switching frequency falls within the 250 kHz to 2.5 MHz programmable range. Consider thermal dissipation capabilities based on the QFN-28 package and expected ambient operating temperatures.

Part Context

This part belongs to the LT3694 family of mixed-signal power management ICs designed for space-constrained applications. It consolidates multiple power stages into a single compact footprint. The device simplifies board layout by integrating control loops and protection features typically found in discrete designs.

Replacement Considerations

LT3694EUFD-1#TRPBF

FAQ

What is the function of the '#1' suffix in the part number?

The '#1' suffix indicates that the device includes internal sequencing logic to control the startup and shutdown order of its outputs.

Can the switching frequency be adjusted?

Yes, the buck converter switching frequency is programmable between 250 kHz and 2.5 MHz using an external resistor.