LTC3851AIMSE#TRPBF

DC DC Switching Controllers Overview

The LTC3851AIMSE#TRPBF is a high-performance synchronous step-down switching regulator controller from Analog Devices Inc. It operates within an input voltage range of 4V to 38V and supports output voltages from 800mV to 5.5V. The device utilizes a constant frequency current mode architecture with a phase-lockable switching frequency between 250kHz and 750kHz. Designed for automotive applications, it features an extended operating temperature range of -40°C to +125°C. The component is housed in a 16-lead MSOP EP package.

DC DC Switching Controllers Feature Summary

• Drives all N-channel synchronous power MOSFETs for high efficiency
• Constant frequency current mode architecture allows phase-lockable frequencies up to 750kHz
• Integrated soft-start and tracking capabilities for controlled startup sequences
• Automotive-grade qualification ensuring reliability in harsh environments

DC DC Switching Controllers Applications

• Automotive infotainment systems
• Distributed power architectures in vehicles
• Industrial control systems requiring wide input ranges
• Telecommunications equipment power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the AIMSE variant meets automotive temperature requirements. Check for RoHS compliance documentation. Ensure the 16-MSOP EP footprint matches your PCB layout. Validate supply chain authenticity through authorized distributors.

DC DC Switching Controllers Selection Notes

Select this controller when driving external N-channel MOSFETs is preferred over integrated solutions. Consider the 4V to 38V input range for varying source conditions. Evaluate the 250kHz to 750kHz frequency range against EMI constraints. Verify thermal management needs for the MSOP EP package under maximum load conditions.

DC DC Switching Controllers Part Context

This component belongs to the LTC3851A family of synchronous buck controllers. It shares architectural similarities with other models in the series but differs in package type and automotive qualification status. The MSOP EP package offers a compact solution for space-constrained designs while maintaining thermal performance.

DC DC Switching Controllers Replacement Considerations

LTC3851AIMSE#PBF is the tube version of the same electrical specification. LTC3851AIGN#TRPBF offers industrial temperature range instead of automotive. Verify pin compatibility before substitution.