LTC3809IMSE-1#TRPBF

DC DC Switching Controllers Overview

The LTC3809IMSE-1#TRPBF is a synchronous step-down DC/DC controller manufactured by Analog Devices Inc. It operates with an input voltage range of 2.75 V to 9.8 V and supports output voltages from 600 mV to 9.8 V. The device features a fixed switching frequency of 550 kHz and delivers up to 5 A of output current. It utilizes a 10-MSOP package with exposed pad, suitable for surface mount applications across a temperature range of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Synchronous buck topology eliminates external rectifier diodes for improved efficiency
• Integrated tracking capability allows synchronized startup sequencing with other power rails
• Fixed 550 kHz switching frequency enables the use of compact passive components

DC DC Switching Controllers Applications

• Point-of-load regulation in industrial equipment
• Power distribution systems for embedded computing modules
• Battery-powered portable devices requiring efficient voltage conversion

DC DC Switching Controllers Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing. Confirm the IMSE variant corresponds to the MSOP-10 package rather than DFN options. Ensure compatibility with the intended thermal management strategy for the exposed pad configuration during assembly.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring low input voltage operation down to 2.75 V. The integrated synchronous rectification reduces external component count compared to non-synchronous alternatives. Consider the 550 kHz frequency trade-off between size and efficiency for the target application load profile.

DC DC Switching Controllers Part Context

This part belongs to the LTC3809 family of high-efficiency synchronous buck controllers. The IMSE designation specifies the MSOP-10 package option, distinct from the DFN variants like the IDD-1. The family focuses on low-voltage, single-output applications with integrated control logic.

DC DC Switching Controllers Replacement Considerations

LTC3809IMSE-1#PBF serves as the tube-packaged equivalent. For package changes, the LTC3809IDD-1#TRPBF offers the same electrical performance in a 10-DFN footprint.