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The LT3990IMSE#TRPBF is a monolithic buck switching regulator manufactured by Analog Devices Inc., housed in a 16-MSOP package with an exposed pad. It accepts input voltages from 4V to 62V and delivers up to 350mA output current. The device features a fixed 5V output, adjustable switching frequency up to 2.3MHz, and ultra-low quiescent current of 2.5uA. Operating temperature range spans -40°C to +125°C.
Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm the fixed 5V output variant matches the design requirement, as other output options exist within the LT3990 family. Ensure the 16-MSOP footprint aligns with the PCB layout specifications before finalizing procurement.
Select this component for applications requiring high input voltage tolerance and low standby power consumption. The fixed 5V output simplifies design compared to adjustable variants. Consider the 350mA current limit for load requirements and ensure thermal management suits the MSOP package constraints.
This part belongs to the LT3990 series of high-voltage step-down converters. It shares core architecture with other LT3990 variants but differs in output configuration and packaging format. The IMSE designation specifies the industrial temperature grade and MSOP package type.
LT3990EMSE#TRPBF offers adjustable output voltage instead of fixed 5V. LT3990IMSE-3.3#PBF provides a fixed 3.3V output. Verify output voltage compatibility and packaging differences when substituting.