LM2575M-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575M-ADJ/NOPB is a monolithic integrated circuit step-down switching voltage regulator from the Texas Instruments SIMPLE SWITCHER® family. It operates with an input voltage range of 4V to 40V and delivers up to 1A of output current. The device utilizes a fixed-frequency 52kHz internal oscillator, eliminating the need for external frequency compensation components. It features adjustable output voltage via an external resistor divider, with a typical reference voltage of 1.23V. The regulator includes built-in thermal shutdown and cycle-by-cycle current limiting for robust protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch capable of driving 1A loads
• Fixed 52kHz oscillating frequency simplifies external component selection
• Built-in thermal shutdown and cycle-by-cycle current limit protection
• Low standby supply current with external shutdown capability

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for distributed power systems
• Efficient pre-regulators for linear post-regulators
• Battery-powered applications requiring high efficiency
• General-purpose DC/DC conversion circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the package marking and date code against the official Texas Instruments datasheet to confirm authenticity. Ensure the suffix NOPB indicates lead-free and RoHS compliance as specified in the product documentation. Cross-reference the part number with authorized distributors to avoid counterfeit components that may lack proper traceability or performance specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing buck converters requiring a 40V maximum input and 1A continuous output. The adjustable version allows flexible output voltage setting between 1.23V and the input limit. Consider the TO-263 surface-mount package for PCB space constraints. Evaluate thermal management requirements based on the expected voltage drop and load current at maximum operating temperatures.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of SIMPLE SWITCHER regulators, designed to replace traditional linear regulators for improved efficiency. The series offers fixed and adjustable output options in various packages. The LM2575M variant specifically provides a surface-mount solution suitable for automated assembly processes while maintaining the core performance characteristics of the broader family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible alternatives within the same family include LM2575S-ADJ/NOPB (TO-263) and LM2575T-ADJ/NOPB (TO-220). For higher current requirements, consider the LM2576 series. Verify that substitute parts match the required input voltage range, output current capacity, and thermal performance specifications.