LT8609BIMSE#TRPBF

Overview

The LT8609BIMSE#TRPBF is a synchronous step-down (buck) switching regulator from Analog Devices, housed in a 10-MSOP package with exposed pad. It supports an input voltage range of 3V to 42V and delivers up to 3A output current. The device features adjustable output voltage starting from 0.782V, with a switchable frequency between 200kHz and 2.2MHz. Quiescent current is specified at 2.5µA. Operating temperature ranges from -40°C to +125°C TJ.

Feature Summary

• Integrated synchronous rectification for high efficiency across load ranges
• Adjustable switching frequency allows optimization for size or EMI performance
• Low quiescent current enables extended battery life in standby modes

Applications

• Industrial point-of-load regulation
• Battery-powered instrumentation
• Embedded systems power distribution

Procurement Notes

Verify the suffix TRPBF indicates tape-and-reel packaging with lead-free finish. Confirm the IMSE variant corresponds to the specific thermal and electrical characteristics required. Check manufacturer documentation for assembly site details and RoHS compliance status prior to ordering.

Selection Notes

Select this component when input voltages exceed 36V but require compact surface-mount integration. The 3A capability suits moderate load applications where space constraints preclude larger packages. Ensure thermal design accounts for the MSOP footprint limitations under high load conditions.

Part Context

Part of the LT8609 family of high-voltage synchronous buck regulators. Shares core topology with LT8609A and LT8609E variants, differing primarily in pinout configuration and specific electrical parameter tolerances defined by the manufacturer's internal grading.

Replacement Considerations

LT8609AIMSE#TRPBF and LT8609EMSE#TRPBF are direct functional equivalents within the same series. Verify pin compatibility and thermal performance requirements before substitution.