LT3693EDD#PBF

Overview

The LT3693EDD#PBF is a monolithic dual tracking step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 2.7V to 36V and delivers up to 3A output current per channel. The device integrates two high-efficiency synchronous buck converters within a compact 16-lead DFN package. Key electrical specifications include a fixed switching frequency of 2.4MHz, adjustable output voltages from 0.8V to 36V, and a typical quiescent current of 150µA. It supports independent or synchronized operation modes for flexible power system design.

Feature Summary

• Dual independent synchronous buck regulators with integrated high-side and low-side MOSFETs
• Synchronized operation capability allowing multiple devices to share a common clock signal
• Integrated soft-start circuitry to limit inrush current during startup
• Thermal shutdown and cycle-by-cycle current limiting protection mechanisms

Applications

• Point-of-load regulation in industrial equipment
• Power distribution systems for telecommunications infrastructure
• Battery-powered portable devices requiring efficient dual-rail supply
• Automotive electronics requiring wide input voltage tolerance

Procurement Notes

Verify the specific suffix designation against the manufacturer's official datasheet to confirm pinout compatibility and thermal performance characteristics. Ensure that the operating temperature range meets the application requirements, as variations may exist between different grade classifications within the same part family. Cross-reference the ordering information with authorized distributors to confirm availability status.

Selection Notes

Select this component when dual isolated or tracking outputs are required from a single controller architecture. Evaluate the thermal dissipation capabilities of the DFN package relative to the expected load current and ambient temperature conditions. Consider the 2.4MHz switching frequency trade-off between component size and electromagnetic interference levels compared to lower frequency alternatives.

Part Context

This part belongs to the LT3693 series of dual step-down regulators designed for applications requiring two regulated outputs from a single IC. It complements the broader portfolio of Linear Technology (now Analog Devices) power management solutions focused on high-density power conversion. The series emphasizes efficiency and board space savings through integration of power switches and control logic.

Replacement Considerations

LT3693EDD#TRPBF: Same functional specification but supplied in tape-and-reel packaging instead of tube. Verify reel quantity and handling requirements differ from the tray-packaged version.