LTC3809EDD-1#TRPBF

DC DC Switching Controllers Overview

The LTC3809EDD-1#TRPBF is a synchronous step-down DC/DC controller manufactured by Analog Devices Inc. It operates with an input voltage range of 2.75V to 9.8V and features a fixed switching frequency of 550kHz. The device supports up to 100% duty cycle and includes integrated soft-start and tracking capabilities. Packaged in a 10-DFN (3x3) surface-mount case, it functions as a single-output positive regulator suitable for low-voltage applications.

DC DC Switching Controllers Feature Summary

• Synchronous buck topology eliminates external sense resistors
• Integrated output voltage tracking functionality
• Fixed 550kHz switching frequency operation
• Supports 100% continuous duty cycle

DC DC Switching Controllers Applications

• Low voltage point-of-load regulation
• Battery-powered digital devices
• Industrial distributed power systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging configuration. Confirm RoHS compliance status matches current manufacturing standards. Ensure the DFN-10 package footprint aligns with PCB layout requirements. Cross-reference the IDD-1 designation against official datasheets to confirm pinout compatibility.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring low input voltage operation below 10V. The absence of current sense resistors reduces bill of materials cost. Verify thermal performance within the -40°C to 85°C operating range. Ensure external MOSFET selection matches the gate drive requirements for optimal efficiency at 550kHz.

DC DC Switching Controllers Part Context

This part belongs to the LTC3809 family of synchronous buck controllers. It shares architectural similarities with other members but differs in package type and specific electrical parameters. The EDD-1 suffix denotes the specific 10-DFN package variant. This series targets compact power solutions where space constraints are critical.

DC DC Switching Controllers Replacement Considerations

LTC3809IDD-1#TRPBF serves as a direct equivalent with identical electrical specifications and compatible pinout. Verify package dimensions match exactly before substitution. No functional changes are expected between these variants.