LT3508IUF#TRPBF

Overview

The LT3508IUF#TRPBF is a dual-channel synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.7 V to 36 V and provides two adjustable outputs, each capable of delivering up to 1.4 A. The device integrates high-side and low-side N-channel power switches within a compact QFN-24 package. It supports a fixed switching frequency of 2.5 MHz and features a shutdown mode with a typical quiescent current of 4.3 mA. The component is rated for operation between -40°C and +125°C.

Feature Summary

• Integrates dual independent synchronous buck converters in a single package
• Supports wide input voltage ranges from 3.7 V to 36 V
• Includes internal high-side and low-side N-channel power switches
• Features adjustable output voltage control via external resistors

Applications

• Industrial point-of-load regulation
• Distributed power systems
• Battery-powered equipment requiring dual rails
• Telecommunications infrastructure power supplies

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the supplier source is authorized to guarantee part authenticity and traceability. Check for any recent product change notices regarding material or manufacturing site updates.

Selection Notes

Select this component when dual isolated or non-isolated buck rails are required from a single input source. The 2.5 MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Verify that the thermal performance of the QFN-24 package meets the system's heat dissipation requirements under maximum load conditions.

Part Context

This part belongs to the LT3508 family of dual synchronous buck regulators. It shares functional similarities with other multi-channel PMICs but distinguishes itself through its specific 36 V input rating and integrated switch architecture. It serves as a solution for space-constrained designs needing multiple regulated voltages.

Replacement Considerations

LT3508EFE#PBF: Identical electrical specifications with tube packaging instead of tape-and-reel.