LT3645IMSE#TRPBF

Overview

The LT3645IMSE#TRPBF is a dual-output switching voltage regulator manufactured by Analog Devices Inc. It integrates a 500mA buck converter and a 200mA low dropout linear regulator (LDO) in a single package. The device supports an input voltage range of 3.6V to 36V. The buck regulator operates at a fixed frequency of 750kHz, while the LDO provides precise regulation with low dropout characteristics. The component is housed in a 12-lead MSOP package and is rated for operation between -40°C and +85°C.

Feature Summary

• Integrates a high-frequency step-down buck regulator with a low dropout linear regulator
• Provides independent output current capabilities of 500mA for the buck channel and 200mA for the LDO channel
• Features robust protection mechanisms including overvoltage protection and power good signaling

Applications

• Compact power supply designs requiring multiple regulated rails
• Industrial control systems needing efficient step-down conversion
• Embedded applications utilizing both switching and linear regulation topologies

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing from distributors. Confirm availability status as supply constraints may affect immediate procurement. Ensure the operating temperature range meets the environmental requirements of the target application before finalizing orders.

Selection Notes

Select this component when space-constrained designs require two distinct voltage regulation methods. The integrated topology reduces board area compared to discrete solutions. Verify that the combined current demands of the load do not exceed the 500mA buck or 200mA LDO limits respectively.

Part Context

This part belongs to the LT3645 series, which combines switching and linear regulation technologies. It serves as a solution for applications needing efficient bulk conversion alongside clean, low-noise power delivery. The MSOP-12 package facilitates surface-mount assembly in compact electronic devices.

Replacement Considerations

Check for pin-compatible alternatives within the Analog Devices portfolio if supply issues arise. Verify that substitute parts maintain the same input voltage range and output current specifications to ensure circuit compatibility.