LM2575T-012

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575T-012 is a monolithic integrated circuit designed for step-down (buck) switching regulator applications. It operates with an input voltage range of 4.75V to 40V and provides a fixed 12V output at up to 1A load current. The device utilizes a 52kHz fixed-frequency internal oscillator, requiring minimal external components for implementation. It features built-in frequency compensation and supports through-hole TO-220-5 packaging.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates all active functions required for a buck converter design
• Includes internal fixed-frequency oscillator for simplified circuitry
• Provides inherent thermal shutdown and current limiting protection

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems
• Pre-regulators for linear post-regulators
• Efficient step-down converters from higher bus voltages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin carefully, as onsemi acquired National Semiconductor's analog portfolio which originally produced this part. Confirm the specific suffix indicates the correct package type and lead finish. Check for RoHS compliance status if environmental regulations apply to your assembly process.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required from a variable or high input voltage source. It is suitable for designs prioritizing simplicity over adjustable output flexibility. Ensure the inductor selection matches the standard optimized series recommended for the 52kHz switching frequency to maintain efficiency.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 family of simple switcher regulators. The 'T' suffix typically denotes the tape-and-reel packaging variant, while the base model represents the standard 1A buck regulator architecture widely used in industrial and commercial power supplies.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575T-12/NOPB by Texas Instruments serves as a direct functional equivalent within the same product lineage. Other manufacturers may offer pin-compatible alternatives, but verification of electrical parameters and thermal characteristics is required.