LT3493EDCB#TRMPBF

Overview

The LT3493EDCB#TRMPBF is a step-down DC/DC converter manufactured by Analog Devices Inc. It features an internal 1.75A power switch and operates with an input voltage range of 3.6V to 36V, with a maximum rating of 40V. The device provides a fixed switching frequency of 750kHz and delivers up to 1.2A output current. It utilizes current mode PWM control and is housed in a thermally enhanced 2mm x 3mm DFN-6 package.

Feature Summary

• Integrates a 1.75A power switch for high current capability within a compact footprint
• Supports wide input voltage ranges suitable for automotive and industrial sources
• Utilizes cycle-by-cycle current limit protection for short-circuit robustness
• Features low shutdown current to enable efficient power management in battery systems

Applications

• Regulating power from unregulated wall transformers
• Powering circuits from 24V industrial supplies
• Battery-powered system power management
• Automotive battery regulation applications

Procurement Notes

Verify the specific suffix #TRMPBF against the manufacturer's official datasheet to confirm tape-and-reel packaging and temperature grade. Confirm RoHS compliance status directly with the supplier or manufacturer documentation prior to procurement. Ensure the component source is authorized to avoid counterfeit risks given the restricted supply status noted in distributor records.

Selection Notes

Select this component when a compact solution is required for stepping down voltages from automotive or industrial sources. The fixed 750kHz frequency allows for the use of small external inductors and ceramic capacitors. Consider the 1.2A output limit and 40V absolute maximum input rating during circuit design to ensure adequate headroom and thermal performance.

Part Context

This part belongs to the LT3493 series of monolithic step-down switching regulators. It is designed as a space-saving alternative to discrete solutions, integrating the controller, power switch, and bootstrap diode into a single low-profile package. The series targets applications requiring high efficiency and minimal board area consumption.

Replacement Considerations

LT3493EDCB-PBF: Same functional specifications but may differ in reel packaging configuration.

FAQ

What is the maximum input voltage for the LT3493EDCB#TRMPBF?

The device operates from 3.6V to 36V, with a maximum absolute rating of 40V.

Does the LT3493 support soft-start functionality?

Yes, the device includes internal soft-start to eliminate input current surge during start-up.