LT8608EMSE#PBF

Overview

The LT8608EMSE#PBF is a synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3V to 42V and delivers a continuous output current of 1.5A. The device features adjustable output voltage and supports switching frequencies between 200kHz and 2.2MHz. Quiescent current consumption is specified at 1.7µA, with a maximum of 2.5µA in Burst Mode operation. It functions within a junction temperature range of -40°C to +125°C and is housed in a 10-lead MSOP package with an exposed pad.

Feature Summary

• High efficiency low ripple Burst Mode operation maintains output ripple below 10mV while ensuring high efficiency at very low output currents.
• Internal compensation combined with peak current mode topology enables the use of small inductors for fast transient response and stable loop performance.
• Integrated EN/UV pin provides accurate undervoltage lockout programming and shutdown control with a precise 1V threshold.
• Power Good (PG) flag signals when the output voltage is within ±8.5% of the programmed level or indicates fault conditions.

Applications

• Industrial systems requiring compact power solutions
• Automotive electronics operating within wide input voltage ranges
• Portable equipment demanding extended battery life through low quiescent current
• Embedded controllers needing fast transient response

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and tape/reel specifications. Ensure compatibility with required thermal management strategies for the MSOP-10 package. Confirm that the selected switching frequency aligns with external component constraints. Validate that the input voltage range meets system requirements before integration.

Selection Notes

Select this component for designs requiring a wide input voltage range up to 42V in a compact footprint. Consider the internal compensation for simplified bill of materials. Evaluate the 1.5A current capability against peak load demands. Assess thermal performance based on the exposed pad design and ambient operating conditions.

Part Context

This part belongs to the LT8608 family of high-efficiency synchronous buck regulators. It shares architectural similarities with other Analog Devices PMICs but is distinct in its 42V input rating and 1.5A output capacity. The MSOP-10 package differentiates it from larger footprint alternatives in the same series.

Replacement Considerations

LT8608IMSE#TRPBF is a documented variant within the same product line offering identical electrical characteristics. Verify package marking and reel configuration differences if transitioning between tube and tape-and-reel formats.