LT3508EUF#TRPBF

Overview

The LT3508EUF#TRPBF is a dual-channel monolithic step-down switching regulator manufactured by Analog Devices Inc. It operates within an input voltage range of 3.7 V to 36 V and delivers up to 1.4 A per channel. The device features a fixed 2.5 MHz switching frequency, adjustable output voltages starting from 0.8 V, and a quiescent current of 4.3 mA. Packaged in a 24-lead QFN format, it supports operation across temperatures from -40°C to +125°C.

Feature Summary

• Dual independent buck converters with shared control logic
• Integrated high-efficiency power switches rated at 1.4A each
• Fixed high-frequency operation for compact passive size
• Shutdown pin for low-power standby modes

Applications

• Portable battery-powered equipment
• Industrial control systems
• Embedded computing platforms

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and tape-and-reel configuration. Ensure compatibility with thermal requirements for the QFN-24 footprint. Cross-reference manufacturer datasheets for exact ordering information and availability status prior to procurement.

Selection Notes

Select this component when dual isolated or non-isolated buck outputs are required from a single wide-input source. The 2.5 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the 1.4A continuous current rating meets peak load demands for both channels simultaneously.

Part Context

This part belongs to the LT3508 series of dual synchronous buck regulators. It shares architectural similarities with other LT35xx family members but is distinct in its dual-channel 1.4A configuration and 2.5 MHz fixed frequency operation, differentiating it from single-channel or variable-frequency variants.

Replacement Considerations

LT3508IUF#PBF