LT3479EDE#TRPBF

Overview

The LT3479EDE#TRPBF is a switching regulator manufactured by Analog Devices Inc., housed in a DFN-14 surface-mount package. It operates as a boost converter with an input voltage range of 2.5 V to 24 V and delivers up to 3 A output current. The device supports a programmable switching frequency from 200 kHz to 3.5 MHz and provides a maximum output voltage of 42 V. It features a soft-start function, low quiescent current of 5 mA, and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates capacitor-programmable soft-start for controlled inrush current management
• Supports wide input voltage ranges suitable for battery-powered applications
• Offers flexible switching frequency adjustment via external capacitor

Applications

• General purpose positive and negative DC/DC conversion
• Boost circuits requiring high output current
• Inverting circuits generating negative voltages

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the DFN-14 package dimensions match the target PCB footprint requirements. Ensure the selected variant meets the required thermal dissipation standards for the intended operating environment.

Selection Notes

Select this component for designs requiring a single-output boost topology with high current capability. Consider the 200 kHz to 3.5 MHz frequency range for optimizing inductor size versus efficiency. Evaluate the 42 V maximum output limit against load requirements to ensure safe operation margins.

Part Context

This part belongs to the LT3479 family of general-purpose positive/negative converters. It shares functional similarities with other Linear Technology power management ICs designed for compact, efficient power solutions in portable and industrial electronics.

Replacement Considerations

LT3479EDE#PBF is a verified equivalent offering identical electrical specifications but in tube packaging instead of tape and reel.