LM25576QMH/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM25576QMH/NOPB is an automotive-grade, monolithic step-down DC/DC switching regulator from Texas Instruments. It integrates a high-voltage N-channel MOSFET switch and operates within an input voltage range of 6 V to 42 V. The device delivers up to 3 A of output current with an adjustable output voltage spanning from 1.225 V to 40 V. It supports switching frequencies between 50 kHz and 1 MHz, enabling the use of small passive components. The component functions in buck and inverting topologies, features current-mode control, and includes integrated protection mechanisms such as thermal shutdown and cycle-by-cycle current limiting.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-voltage N-channel power switch for simplified design
• Supports both buck and inverting converter topologies
• Includes comprehensive protection against over-temperature and over-current conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Body electronics and lighting control modules
• Industrial point-of-load regulation
• General-purpose DC/DC conversion in harsh environments

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific part number suffix corresponds to the tube packaging format, as other variants may utilize tape-and-reel configurations. Confirm that the Q-marking aligns with required automotive qualification standards for your specific application environment. Ensure compatibility with the HTSSOP-20 footprint during PCB layout planning.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems requiring wide input voltage ranges up to 42 V combined with moderate output currents near 3 A. It is suitable for applications where space constraints favor synchronous or non-synchronous buck designs using external Schottky diodes. Consider the inverting topology option if negative rail generation is necessary alongside positive regulation.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the LM25576 family, which provides robust performance for automotive and industrial markets. It shares functional similarities with the LM25575 but offers higher current capability. The device is designed to meet stringent reliability requirements, often complemented by evaluation boards like the LM25576EVAL for rapid prototyping and circuit validation.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM25576QMHX/NOPB: Identical electrical specifications and functionality; differs only in packaging format (tape-and-reel versus tube). LM25576MH/NOPB: Non-automotive grade version with identical pinout and parameters.