LM2575M-15/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575M-15/NOPB is a SIMPLE SWITCHER® power converter from Texas Instruments, functioning as a monolithic integrated circuit for step-down (buck) switching regulators. It provides a fixed 15V output with a maximum load current of 1A. The device supports an input voltage range of 4.75V to 40V and operates at a typical switching frequency of 52kHz. Packaged in the compact PowerPAD™ TO-263 (TO-263-5) surface-mount format, it integrates a 150kHz oscillator and requires minimal external components. Key protection features include thermal shutdown and cycle-by-cycle current limiting.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-speed power MOSFET capable of driving 1A loads without external drivers
• Built-in fixed-frequency oscillator with precise timing control for simplified design
• Internal thermal shutdown and cycle-by-cycle current limiting for robust fault protection
• Requires minimal external passive components due to integrated frequency compensation

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation modules
• Pre-regulators for downstream linear regulators
• Efficient buck converters for battery-powered systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the package marking and date code against the official datasheet to confirm authenticity. Ensure the supplier provides traceability documentation consistent with Texas Instruments manufacturing standards. Confirm that the component is marked with the correct suffix indicating lead-free and RoHS compliance. Cross-reference the part number with the manufacturer's current product status to ensure availability and lifecycle stability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this specific variant when a fixed 15V output is required for applications operating within a 40V maximum input limit. The TO-263 package is suitable for designs requiring moderate power dissipation with surface-mount assembly constraints. Consider the 52kHz switching frequency when sizing external inductors and capacitors to balance efficiency and component size requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2575 series of SIMPLE SWITCHER® regulators, designed to replace traditional three-terminal linear regulators. The series offers improved efficiency and reduced heat generation. The 'M' suffix denotes the TO-263 surface-mount package, while '/NOPB' indicates a non-phosphorus bronze lead finish compliant with environmental directives.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible alternatives within the same family include LM2575S-15/NOPB (same function, different package variant) or LM2575T-15/NOPB (through-hole version). For higher voltage inputs up to 75V, consider the LM2575HV series.