LTC7801EFE#TRPBF

DC DC Switching Controllers Overview

The LTC7801EFE#TRPBF is a synchronous step-down DC/DC controller from Analog Devices, designed for high-voltage input applications. It operates with an input voltage range of 4V to 140V and supports a single output channel. The device features a programmable switching frequency between 50kHz and 900kHz, allowing for optimization of efficiency and component size. It delivers up to 10A of output current with an adjustable output voltage range from 800mV to 60V. The controller utilizes current-mode control with a maximum duty cycle of 100%. It is housed in a 24-pin TSSOP package and functions within a temperature range of -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Supports high input voltages up to 140V for flexible power distribution architectures
• Enables precise regulation through internal current-mode control and soft-start capabilities
• Offers wide switching frequency adjustability to optimize magnetic component selection
• Provides comprehensive protection features including over-current limiting and thermal shutdown

DC DC Switching Controllers Applications

• Industrial power supplies requiring high input voltage ranges
• Telecommunications infrastructure equipment
• Automotive battery-powered systems
• Point-of-load regulation modules

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing components. Confirm that the part number corresponds to the leaded (Pb-free) version if RoHS compliance is required. Cross-reference the manufacturer's latest datasheet to ensure availability status, as supply constraints may affect procurement timelines. Ensure the ordering quantity matches the reel specifications provided by the distributor.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring high input voltage tolerance without external level shifting. Evaluate the thermal performance of the TSSOP-24 package against the expected load current and ambient conditions. Consider the external MOSFET selection based on the gate drive capability and switching frequency settings. Verify that the inductor and capacitor values align with the desired ripple specifications and stability requirements for the chosen operating frequency.

DC DC Switching Controllers Part Context

This component belongs to the LTC7801 family of high-voltage synchronous buck controllers. It shares core architectural similarities with other members like the LTC7801EUFD#TRPBF but differs primarily in packaging. While the EUFD variant uses a QFN package, the EFE variant utilizes a TSSOP form factor, offering different thermal and mechanical integration options for PCB layout strategies.

DC DC Switching Controllers Replacement Considerations

The LTC7801EUFD#TRPBF serves as a functional equivalent with identical electrical characteristics but utilizes a 24-QFN package instead of TSSOP. Designers must account for footprint differences during replacement. Other high-voltage buck controllers from Analog Devices may offer similar performance but require verification of pin compatibility and control loop stability.