LT3694IFE#PBF

Overview

The LT3694IFE#PBF is a monolithic switching regulator integrating a high-efficiency buck converter and two low-dropout linear regulators. It accepts input voltages from 4V to 36V and delivers up to 2.6A from the buck output. The device features three adjustable outputs, with the LDOs providing independent regulation. Operating frequencies range from 250kHz to 2.5MHz, allowing optimization for size and efficiency. Quiescent current is typically 1mA.

Feature Summary

• Integrates a synchronous buck converter with dual LDO regulators in a single package
• Supports wide input voltage range suitable for various power bus architectures
• Features adjustable switching frequency to optimize external component selection

Applications

• Portable equipment requiring multiple regulated voltage rails
• Industrial control systems needing compact power solutions
• Communication infrastructure utilizing mixed-signal power distribution

Procurement Notes

Verify the specific suffix and package type against the target design requirements. Confirm that the thermal performance of the TSSOP-EP-20 package meets the application's dissipation needs. Ensure compatibility with the intended switching frequency settings. Check for any regional distribution restrictions or obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when a combined buck and dual-LDO solution is required to save board space. Consider the maximum output current capabilities of each regulator stage relative to the load demands. Evaluate the thermal resistance of the chosen package for the expected ambient temperature conditions. Verify that the input voltage range covers the system's operational variations.

Part Context

This part belongs to the LT3694 family of integrated power management ICs designed for applications requiring multiple voltage rails from a single source. It consolidates power conversion functions to reduce component count and simplify layout. The device is manufactured by Analog Devices Inc. using advanced CMOS processes for high efficiency and reliability.

Replacement Considerations

LT3694EUFD#PBF

FAQ

What is the topology of the main regulator?

The primary regulator utilizes a synchronous buck topology.

How many output channels are available?

The device provides three output channels: one buck converter and two LDO regulators.