LT8638SEV#PBF

Overview

The LT8638SEV#PBF is a synchronous buck Silent Switcher regulator from Analog Devices, housed in a 28-lead LQFN package. It supports an input voltage range of 2.8 V to 42 V and delivers up to 10 A of output current. The device features adjustable switching frequencies between 200 kHz and 3 MHz and operates within a junction temperature range of -40°C to +125°C. Key electrical parameters include a typical quiescent current of 9 µA and a minimum on-time of 25 ns.

Feature Summary

• Integrates second-generation Silent Switcher architecture to minimize electromagnetic interference radiation without requiring external filters.
• Incorporates internal bypass capacitors to optimize high-speed current loops and reduce layout sensitivity for consistent performance.
• Supports burst mode operation to achieve low no-load power consumption while maintaining regulated output.

Applications

• Industrial automation systems requiring robust power management
• Telecommunications infrastructure equipment
• Embedded computing platforms with wide input voltage ranges

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and lead-free status. Confirm that the component meets RoHS directives and humidity sensitivity level requirements for your assembly process. Ensure compatibility with your PCB footprint specifications before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring high efficiency across a wide input voltage range. The integrated EMI reduction capabilities simplify compliance testing. Consider the thermal performance of the LQFN package relative to your expected load currents and ambient operating conditions.

Part Context

This part belongs to the LT8638S series of synchronous step-down converters. The series is designed for applications demanding high power density and low noise. The SEV suffix indicates a specific tape and reel or tray packaging configuration provided by the manufacturer.

Replacement Considerations

Consult official substitution guides for compatible parts within the LT8638 family. Verify pinout and thermal pad configurations to ensure mechanical compatibility during replacement.