LM5576MHX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM5576MHX/NOPB is an automotive-grade, high-voltage synchronous buck switching regulator from the SIMPLE SWITCHER family. It delivers a continuous output current of 3A with an adjustable output voltage range from 1.225V to 70V. The device operates with an input voltage range of 6V to 75V and supports a programmable switching frequency between 50kHz and 500kHz. Housed in a 20-PowerTSSOP package, it features integrated protection mechanisms including thermal shutdown and current limiting, ensuring reliable operation across a junction temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for improved efficiency
• Automotive qualification compliant with AEC-Q100 standards
• Programmable switching frequency for optimized external component size
• Built-in thermal shutdown and cycle-by-cycle current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• High-voltage point-of-load regulation in automotive systems
• Powering field-programmable gate arrays (FPGAs) and complex programmable logic devices (CPLDs)
• Industrial power supply modules requiring wide input voltage ranges
• Distributed power architectures in vehicle electronics

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'MHX' confirms the tape-and-reel packaging format required for automated assembly processes. Confirm that the 'Q' designation in the base part number aligns with your project's automotive quality requirements. Ensure the 20-PowerTSSOP footprint matches your PCB layout constraints. Cross-reference the latest datasheet revision to confirm pinout consistency before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range up to 75V is required alongside a fixed 3A output capability. The synchronous design reduces external component count compared to non-synchronous alternatives. Consider the thermal performance of the 20-lead PowerTSSOP package relative to your expected ambient temperatures. Verify that the minimum output voltage of 1.225V meets the lowest rail requirement of your load circuitry.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to Texas Instruments' SIMPLE SWITCHER portfolio, designed to simplify power supply design through integrated controllers and power stages. The LM5576 series specifically targets high-voltage applications where traditional low-voltage regulators are insufficient. It serves as a robust solution for converting higher bus voltages down to stable lower rails for sensitive digital loads in demanding environments.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5576QMHX/NOPB: Verified equivalent with identical electrical specifications and automotive qualification.