LM2575S-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575S-5.0/NOPB is a SIMPLE SWITCHER® 1A step-down voltage regulator from Texas Instruments, housed in a TO-263-5 (D2PAK) surface-mount package. It provides a fixed 5.0V output with a maximum load current of 1A. The device accepts an input voltage range of 4.75V to 40V and operates at a fixed switching frequency of 52kHz. It features internal frequency compensation, thermal shutdown, and current limiting. The component supports operation across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated buck topology simplifies design by requiring minimal external components for stable regulation.
• Built-in thermal protection and cycle-by-cycle current limiting ensure robust performance under fault conditions.
• Fixed 52kHz switching frequency allows the use of compact, cost-effective magnetic components.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in distributed power supply architectures
• Pre-regulation for linear post-regulators
• Efficient battery-powered systems requiring step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance as per Texas Instruments specifications. Ensure the ordering part number matches the exact package variant required for your PCB footprint. Cross-reference the manufacturer's latest datasheet to confirm active status and any potential lifecycle changes before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from an input voltage up to 40V. The TO-263-5 package offers superior thermal dissipation compared to smaller SMD packages, making it suitable for applications where heat management is critical without adding external heatsinks. Consider the 1A current limit when sizing downstream loads.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2575 family of SIMPLE SWITCHER regulators, which are designed to replace traditional three-terminal linear regulators. The family includes adjustable versions and other fixed voltages, offering a balance of ease of use, flexibility, and high efficiency for various DC-DC conversion needs in industrial and consumer electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible alternatives within the same series include LM2575S-ADJ/NOPB for adjustable output or LM2575S-12/NOPB for a 12V fixed output. For higher voltage inputs, consider the LM2575HV series. Verify that substitute parts maintain the same TO-263-5 package and electrical characteristics.