LM4671ITLX/NOPB

Audio Amplifiers Overview

The LM4671ITLX/NOPB is a high-efficiency, synchronous step-down DC-DC converter from National Semiconductor. It integrates two N-channel power MOSFETs and a control circuit to provide a regulated output voltage from an input supply ranging up to 36V. The device operates with a fixed switching frequency of 500kHz, allowing for the use of small external inductors and capacitors. It features adjustable current limit protection and thermal shutdown for robust operation under fault conditions.

Audio Amplifiers Feature Summary

• Integrated synchronous rectification for improved efficiency
• Wide input voltage range supporting various power sources
• Built-in protection mechanisms including over-current and thermal shutdown

Audio Amplifiers Applications

• Point-of-load regulation for industrial equipment
• Power supplies for embedded systems
• Battery-powered devices requiring efficient voltage conversion

Audio Amplifiers Procurement Notes

Verify the exact part number suffix NOPB indicates lead-free compliance when sourcing. Confirm the package type matches your PCB footprint requirements. Ensure the supplier provides valid traceability documentation. Check for any specific handling instructions related to electrostatic discharge sensitivity during assembly.

Audio Amplifiers Selection Notes

Consider the required output current and input voltage range when evaluating this component. The fixed 500kHz switching frequency influences the size of passive components needed. Evaluate thermal performance based on expected load conditions and ambient temperature. Compare efficiency curves against alternative regulators to ensure optimal system performance.

Audio Amplifiers Part Context

This component belongs to the LM467x family of synchronous buck converters. These devices are designed for applications requiring high efficiency and compact solution sizes. The integration of power switches reduces the bill of materials and simplifies design implementation compared to non-synchronous alternatives.