LT3667EUDD#PBF

Overview

The LT3667EUDD#PBF is a triple-output step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 4.3 V to 40 V and delivers up to 400 mA total output current across three channels, with a maximum regulated output voltage of 38.6 V. The device utilizes a fixed 2.2 MHz switching frequency and features a low quiescent supply current of 40 uA. It is housed in a QFN-24 surface-mount package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Integrates three independent buck converters within a single compact package for space-constrained designs.
• Includes dual fault protection mechanisms to enhance system reliability under abnormal conditions.
• Supports shutdown functionality to minimize power consumption during inactive periods.

Applications

• Industrial control systems requiring multiple isolated or non-isolated voltage rails
• Automotive electronics operating within wide input voltage ranges
• Telecommunications infrastructure equipment

Procurement Notes

Verify the specific suffix #PBF confirms lead-free compliance and RoHS standards before procurement. Confirm the EUDD variant matches the required thermal and electrical specifications for your application environment. Ensure compatibility with the DC1869A development kit if initial validation is necessary. Check current distribution availability as stock levels may be restricted.

Selection Notes

Select this component when a design requires three distinct regulated outputs from a single high-voltage source. The 2.2 MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the 400 mA total current limit to ensure adequate headroom for all three channels combined. Evaluate thermal performance requirements given the QFN-24 package constraints.

Part Context

This part belongs to the LT3667 series of triple-output buck regulators. It shares functional similarities with the LT3667IUDD#PBF but differs in manufacturing grade or testing parameters. The series is designed for applications needing efficient power conversion from higher voltage buses down to lower logic or sensor voltages.

Replacement Considerations

LT3667IUDD#PBF is a verified alternative within the same product family offering identical electrical characteristics and pinout compatibility.