LTC3851AIMSE-1#PBF

DC DC Switching Controllers Overview

The LTC3851AIMSE-1#PBF is a synchronous step-down switching regulator controller from Analog Devices, housed in a 16-pin MSOP EP package. It operates with an input voltage range of 4.5 V to 32 V and supports output voltages from 800 mV to 5.5 V. The device utilizes a constant frequency current mode architecture with a phase-lockable switching frequency up to 750 kHz. It features low quiescent current of 20 uA and a shutdown function. The component is rated for industrial temperatures between -40°C and +125°C and offers a load regulation of 0.01%.

DC DC Switching Controllers Feature Summary

• Drives all N-channel synchronous power MOSFET stages for high efficiency
• Constant frequency current mode architecture allows phase-locking up to 750 kHz
• Integrated shutdown capability reduces standby power consumption
• Supports pulse skip operation for improved light-load efficiency

DC DC Switching Controllers Applications

• High efficiency 3.3V/15A step-down converter designs
• 1.5V/15A synchronous regulators synchronized at 350kHz
• 1.8V/5A converters utilizing pulse skip operation
• Industrial distributed power systems requiring wide input ranges

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the MSOP EP package type matches your PCB footprint requirements. Check official documentation for the exact operating temperature range and ensure it meets your application's thermal constraints. Validate that the 16-pin configuration aligns with your design layout.

DC DC Switching Controllers Selection Notes

Select this controller when driving all N-channel MOSFETs is required for optimal performance. Consider the 750 kHz maximum frequency for balancing component size and efficiency. Ensure the input voltage range of 4.5 V to 32 V covers your system's supply variations. Verify compatibility with external compensation networks for stable loop response across load conditions.

DC DC Switching Controllers Part Context

This part belongs to the LTC3851A series of synchronous buck controllers. It is designed for applications demanding high current delivery and precise voltage regulation. The MSOP EP package provides thermal dissipation capabilities suitable for dense layouts. It serves as a core control element in DC-DC conversion stages within power management integrated circuits.

DC DC Switching Controllers Replacement Considerations

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