LT3467EDDB

Overview

The LT3467EDDB is a switching regulator manufactured by Analog Devices Inc., featuring a boost topology within the LT3467 series. It integrates a 42V, 1.1A switch with soft-start functionality and operates at a fixed 1.3MHz switching frequency. The device supports an input voltage range of 2.6V to 4.2V and provides a maximum output voltage of 40V. It delivers up to 1.1A output current through a single output channel. Operating temperatures span from -40°C to +125°C TJ, with a quiescent supply current of 1.2mA. The component is housed in an 8-DFN (3x2) surface-mount package.

Feature Summary

• Integrates a high-voltage 42V, 1.1A power switch with built-in soft-start to limit inrush current during startup.
• Operates at a fixed 1.3MHz switching frequency, enabling the use of compact, low-profile inductors and capacitors.
• Supports multiple converter topologies including Boost, SEPIC, and Flyback configurations for flexible design implementation.

Applications

• Single lithium-ion cell to 5V step-up conversion
• Four-cell battery to 5V SEPIC conversion
• 5V to 12V step-up conversion

Procurement Notes

Verify the specific suffix against official documentation, as variations exist between standard and A-grade versions. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as legacy parts may have different environmental declarations. Ensure the DFN-8 package footprint matches the PCB layout requirements before finalizing procurement decisions.

Selection Notes

Select this component when designing circuits requiring a compact solution for single-cell lithium-ion applications. The fixed 1.3MHz frequency is optimal for minimizing passive component size compared to lower-frequency alternatives. Consider the 42V switch rating for transient protection and the 1.1A current limit for load requirements. Verify thermal performance within the specified operating temperature range for the intended enclosure.

Part Context

This part belongs to the LT3467 family of monolithic switching regulators designed for space-constrained portable electronics. The series is characterized by its ability to drive various loads using minimal external components. The EDDB designation indicates a specific tape-and-reel packaging format for automated assembly processes, distinguishing it from tube-packaged variants.

Replacement Considerations

LT3467IDDB#TRM is a documented variant within the same product family offering identical electrical specifications but potentially different packaging or grade classifications. Verify pinout compatibility and thermal characteristics before substitution.