LTC3809EDD#PBF

DC DC Switching Controllers Overview

The LTC3809EDD#PBF is a synchronous step-down DC/DC controller manufactured by Analog Devices Inc. It operates within an input voltage range of 2.75V to 9.8V and supports output voltages from 600mV to 9.8V. The device features a fixed switching frequency of 550kHz and utilizes a DFN-10 package. It includes integrated soft-start, tracking capabilities, and shutdown functions, designed for efficient power management in low-voltage applications.

DC DC Switching Controllers Feature Summary

• Synchronous buck topology with integrated control logic for N-channel MOSFETs
• Output voltage tracking and synchronized soft-start functionality
• Low quiescent current operation for improved efficiency
• Compact surface-mount packaging suitable for space-constrained designs

DC DC Switching Controllers Applications

• Battery-powered digital devices requiring low input voltage regulation
• Distributed DC power systems with single-rail requirements
• Industrial equipment utilizing 3.3V or 5V bus architectures
• Portable electronics needing efficient step-down conversion

DC DC Switching Controllers Procurement Notes

Verify the exact suffix against official Analog Devices documentation to confirm package type and tape/reel specifications. Ensure the component matches the required operating temperature range and pinout configuration for your specific PCB layout. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.

DC DC Switching Controllers Selection Notes

Select this controller when a single-output synchronous buck solution is required with input voltages up to 9.8V. Consider its 550kHz switching frequency for balancing component size and efficiency. Evaluate the need for output tracking if multiple rails are present. Verify that the external MOSFET selection aligns with the expected load current and thermal constraints of the application.

DC DC Switching Controllers Part Context

This component belongs to the LTC3809 family of low-input-voltage synchronous DC/DC controllers. It shares architectural similarities with other members like the LTC3809EMSE-1 but differs in package and shipping format. The series is designed for applications prioritizing low noise and high efficiency in compact form factors.

DC DC Switching Controllers Replacement Considerations

Publicly confirmed substitute part numbers for LTC3809EDD#PBF were not identified in the provided source material.