LT8609IMSE#TRPBF

Overview

The LT8609IMSE#TRPBF is a synchronous step-down switching regulator from Analog Devices, housed in a 16-lead MSOP package with an exposed pad. It supports an input voltage range of 3V to 42V and delivers up to 2A continuous output current with a 3A peak capability. The device features adjustable output voltages starting from 0.782V, operating at switch frequencies between 200kHz and 2.2MHz. Quiescent current consumption is specified at 1.7µA during operation and 1µA in shutdown mode. It operates within a junction temperature range of -40°C to 150°C.

Feature Summary

• Integrates high-side and low-side N-channel power switches for efficient synchronous rectification.
• Includes internal soft-start circuitry to limit inrush current during startup.
• Features cycle-by-cycle current limit and thermal protection for robust fault handling.
• Supports spread spectrum frequency modulation to reduce electromagnetic interference.

Applications

• Industrial control systems and automation equipment
• Distributed power supply architectures
• Battery-powered portable instruments
• Embedded computing and communication infrastructure

Procurement Notes

Verify the specific suffix and tape-and-reel packaging details against the manufacturer's official documentation before procurement. Confirm that the component meets RoHS compliance requirements for your target market. Ensure that the ordering information matches the exact pinout and thermal characteristics defined in the datasheet to avoid integration errors during assembly.

Selection Notes

Select this component when a wide input voltage range up to 42V is required alongside moderate current delivery in a compact surface-mount footprint. Consider the LT8609 family variants if different package sizes or current ratings better suit the board space constraints. Evaluate the fixed versus adjustable output options based on the specific voltage rail requirements of the application design.

Part Context

This part belongs to the LT8609 family of Silent Switcher regulators, designed for high efficiency and low noise performance. The IMSE variant specifically utilizes a 16-lead MSOP package, distinguishing it from other family members like the LT8609AJMSE which may have different thermal or electrical specifications. It serves as a key solution for applications demanding reliable DC-DC conversion in constrained spaces.

Replacement Considerations

Direct replacements within the same series include LT8609AJMSE#TRPBF and LT8609EMSE#TRPBF. Verify compatibility regarding package dimensions, pin assignments, and thermal performance before substitution. Cross-reference the datasheet to ensure that any alternative part number maintains the required input voltage and current capabilities for the existing design.

FAQ

What is the minimum output voltage supported by the LT8609IMSE?

The device supports adjustable output voltages down to 0.782V.

Does the LT8609IMSE support spread spectrum frequency modulation?

Yes, the regulator includes spread spectrum modulation to help reduce EMI emissions.