LTC3891MPFE#PBF

DC DC Switching Controllers Overview

The LTC3891MPFE#PBF is a synchronous step-down DC/DC switching regulator controller manufactured by Analog Devices Inc. It operates with an input voltage range of 4V to 60V and supports output voltages from 800mV to 24V. The device features a fixed switching frequency of 900kHz, a typical quiescent current of 50µA, and a maximum load regulation of 0.01%. Designed for high efficiency, it utilizes a TSSOP-EP-20 package and supports operating temperatures from -55°C to 150°C junction temperature.

DC DC Switching Controllers Feature Summary

• Synchronous buck topology driving N-channel MOSFETs
• Low quiescent current for battery-powered systems
• Precision tracking and soft-start capabilities

DC DC Switching Controllers Applications

• Automotive always-on systems
• Distributed DC power systems
• Battery-operated digital devices

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against official documentation to confirm temperature grade and packaging type. Ensure compatibility with required thermal management solutions given the wide operating range. Cross-reference the manufacturer's latest datasheet for any pinout or electrical specification updates prior to finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component when a single-output synchronous buck controller is required for high-voltage inputs up to 60V. The fixed 900kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Verify that the external MOSFETs can handle the required current levels, as the controller drives rather than integrates the power stage.

DC DC Switching Controllers Part Context

This part belongs to the LTC3891 family of low IQ synchronous step-down controllers. It shares architectural similarities with other members like the LTC3891EFE but differs in temperature rating and specific electrical characteristics defined by the MP suffix. It serves as a core power management IC for industrial and automotive applications requiring efficient voltage conversion.

DC DC Switching Controllers Replacement Considerations

LTC3891EFE#PBF and LTC3891IFE#PBF are related variants within the same product family. Verify if the extended temperature range (-55°C to 150°C) of the MP variant is strictly necessary, as standard versions may suffice for less demanding environments.