LM2575S-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575S-ADJ is a monolithic integrated circuit step-down (buck) switching regulator manufactured by UMW. It operates with an input voltage range up to 40V and provides an adjustable output voltage from 1.2V to 37V. The device supports a maximum output current of 2A and utilizes a fixed switching frequency of 150kHz. It is housed in a TO-263-6 surface-mount package, also designated as D2PAK or TO-263BA. The component includes internal frequency compensation and protection circuits for efficient power management.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 150kHz fixed-frequency oscillator for simplified external component requirements
• Includes internal thermal shutdown and current limit protection mechanisms
• Supports adjustable output voltage configuration via external feedback resistors

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring buck conversion
• Pre-regulator circuits for linear regulators
• Efficient on-board switching regulators for general electronics

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation explicitly as UMW, distinct from Texas Instruments equivalents. Confirm the suffix indicates the adjustable variant and the S package type. Ensure RoHS3 compliance status matches project requirements. Cross-reference the specific datasheet version for accurate thermal and electrical specifications before integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 2A output capability and 150kHz switching frequency are required within a 40V input limit. The TO-263-6 package offers suitable thermal performance for moderate power dissipation. Verify that the 1.2V minimum output voltage aligns with load requirements. Consider the absence of synchronous rectification for efficiency expectations compared to newer generations.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of simple switcher regulators. While originally developed by National Semiconductor and later Texas Instruments, UMW produces compatible versions. The series is characterized by minimal external components and robust protection features, serving as a standard solution for non-isolated DC-DC conversion applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM2575S-ADJ/NOPB from Texas Instruments. Other manufacturers may offer pin-compatible alternatives with similar electrical characteristics. Verify package dimensions and thermal pad configurations to ensure mechanical compatibility during replacement.