LT3990IMSE-5#TRPBF

Overview

The LT3990IMSE-5#TRPBF is a monolithic buck switching regulator from Analog Devices, housed in a 16-MSOP package. It provides a fixed 5V output with a maximum current of 350mA. The device accepts an input voltage range from 4V to 62V and features an adjustable switching frequency up to 2.3MHz. Quiescent current is specified at 2.5uA, with shutdown mode reducing this to 1.7uA. Operating temperature ranges from -40°C to +125°C.

Feature Summary

• Accepts wide input voltage range up to 62V
• Adjustable switching frequency for optimized performance
• Ultra-low quiescent current consumption
• Integrated synchronous rectification

Applications

• Industrial control systems
• Battery-powered equipment
• Embedded computing platforms
• Sensor node power supplies

Procurement Notes

Verify the suffix #TRPBF indicates tape-and-reel packaging. Confirm the IMSE variant corresponds to the MSOP-16 package. Ensure the -5 suffix matches the required 5V fixed output. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm RoHS compliance and lead-free status before ordering.

Selection Notes

Select this component when a fixed 5V rail is required from high-voltage inputs. The 350mA output current suits low-power loads. The adjustable frequency allows trade-offs between efficiency and external component size. Consider thermal dissipation requirements due to the small surface-mount package footprint.

Part Context

This part belongs to the LT3990 family of high-voltage buck regulators. It shares core architecture with variants like LT3990EMSE#TRPBF but differs in output configuration and packaging. The IMSE designation specifies the MSOP-16 form factor, distinguishing it from larger packages in the same series.

Replacement Considerations

LT3990IMSE-5#PBF is the tube-packaged equivalent. LT3990EMSE-5#TRPBF offers the same electrical specifications in a different package variant.