LT3845AEFE#TRPBF

Overview

The LT3845AEFE#TRPBF is a high voltage synchronous current mode step-down controller manufactured by Analog Devices Inc. It operates within a 4V to 60V input range and supports up to 15A output current with an adjustable frequency from 100kHz to 500kHz. The device features Burst Mode operation for light load efficiency, reducing quiescent current to 120µA. It is housed in a 16-lead TSSOP package and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Synchronous current mode control architecture for medium to high power applications
• Onboard regulator simplifies biasing requirements directly from VIN
• Burst Mode operation maintains high efficiency at light loads
• Reverse inductor current inhibit function supports discontinuous operation

Applications

• Industrial control systems
• Telecom power supplies
• Distributed power architectures

Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when ordering. Confirm that the AEFE designation corresponds to the extended industrial temperature range and TSSOP-16 package variant. Ensure compatibility with external MOSFETs selected for the target current and voltage specifications before finalizing procurement.

Selection Notes

Select this component for designs requiring wide input voltage ranges up to 60V. Consider the adjustable switching frequency for EMI optimization or synchronization needs. Evaluate thermal management requirements given the TSSOP-16 package constraints for high current applications. Verify that the onboard regulator can support the bias current requirements of the chosen external components.

Part Context

This part belongs to the LT3845 family of high voltage synchronous buck controllers. It shares architectural similarities with other Linear Technology (now Analog Devices) power management ICs designed for efficient DC/DC conversion. The AEFE variant specifically denotes the industrial grade temperature rating and surface mount packaging configuration.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.