LT8614HUDC#PBF

Overview

The LT8614HUDC#PBF is a synchronous step-down switching regulator from Analog Devices, featuring Silent Switcher technology to minimize electromagnetic interference. It operates with an input voltage range of 3.4 V to 42 V and delivers up to 4 A of output current. The device supports adjustable output voltages and offers a programmable switching frequency between 200 kHz and 3 MHz. It includes a shutdown feature and maintains a low quiescent current of 1.7 uA. Designed for robust performance, it functions within a temperature range of -40°C to +125°C and is housed in a compact QFN-18 package.

Feature Summary

• Integrates Silent Switcher architecture to significantly reduce radiated electromagnetic emissions without requiring external filtering components.
• Provides high-efficiency synchronous buck conversion capable of handling wide input voltage ranges and delivering substantial continuous output current.
• Features a flexible switching frequency adjustment allowing optimization for either size or efficiency requirements across a broad spectrum.

Applications

• Industrial automation systems requiring isolated power rails
• Distributed power architectures in telecommunications equipment
• Automotive infotainment and control modules
• Point-of-load regulation for embedded computing platforms

Procurement Notes

Verify the specific suffix codes against the official datasheet to ensure correct thermal grade and packaging configuration. Confirm that the requested variant matches the required operating temperature range and pinout compatibility. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when design constraints demand low electromagnetic interference alongside high power density. Consider the wide input voltage capability for applications with varying supply sources. Evaluate the thermal performance within the QFN-18 package relative to the expected load current and ambient conditions to ensure reliable operation under maximum stress scenarios.

Part Context

This part belongs to the LT8614 family of Silent Switcher regulators, designed to address noise-sensitive applications. It shares architectural similarities with other members but is distinguished by its specific 4 A current rating and 42 V input limit. The family emphasizes compact footprint solutions for modern power management needs in space-constrained environments.

Replacement Considerations

LT8614IUDC#PBF: Identical electrical specifications with different industrial temperature grade designation.

FAQ

What is the maximum input voltage supported by the LT8614HUDC#PBF?

The device supports a maximum input voltage of 42 V.

Does the LT8614 series require external shielding for EMI reduction?

No, the integrated Silent Switcher architecture minimizes radiated emissions, typically eliminating the need for external shielding.