LTC3408EDD#TRPBF

Special Purpose Regulators Overview

The LTC3408EDD#TRPBF is a synchronous step-down DC/DC converter manufactured by Analog Devices Inc. It operates with a fixed switching frequency of 1.5 MHz and delivers an output current capability of 600 mA. The device accepts an input voltage range from 2.7 V to 5.5 V and provides an adjustable output voltage between 300 mV and 3.5 V. It features a low quiescent current of 1 µA in shutdown mode and operates within a temperature range of -40°C to +85°C. The component is housed in an 8-lead DFN package.

Special Purpose Regulators Feature Summary

• Integrates a bypass transistor to allow direct connection of the input supply to the load, enabling ultra-low dropout operation when the input voltage approaches the output voltage.
• Utilizes synchronous rectification architecture to maximize conversion efficiency across the entire load current range while minimizing external component count.
• Incorporates a dedicated shutdown pin that reduces supply current to 1 µA, facilitating power management in battery-operated applications.

Special Purpose Regulators Applications

• Portable handheld devices requiring efficient power regulation from single-cell lithium-ion batteries
• Embedded systems utilizing USB-powered architectures needing compact step-down solutions
• Battery-powered consumer electronics where extended operational life is critical

Special Purpose Regulators Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging compatible with automated assembly processes. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the DFN-8 package thermal characteristics align with your printed circuit board layout requirements for adequate heat dissipation during continuous operation.

Special Purpose Regulators Selection Notes

Select this component when input voltages frequently drop near the required output level, as the integrated bypass transistor prevents excessive voltage drop found in standard regulators. The 1.5 MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Verify that the 600 mA output current meets the peak demands of the target load without exceeding thermal limits in the specified operating environment.

Special Purpose Regulators Part Context

This part belongs to the LTC3408 series of monolithic switching regulators designed for space-constrained portable applications. It represents Analog Devices' approach to combining high efficiency with minimal footprint. The DFN package variant offers improved thermal performance relative to traditional surface-mount options, supporting reliable operation in dense electronic assemblies.

Special Purpose Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult official Analog Devices documentation for potential cross-reference recommendations or updated product line replacements.