LM2576R-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576R-12 is a monolithic integrated circuit step-down switching regulator from the TAEJIN LM2576 series. It provides a fixed 12V output with a guaranteed 3.0A load capability. The device operates with a wide input voltage range and utilizes a 52kHz fixed-frequency internal oscillator. Designed for high efficiency, it requires only four external components to function as a buck converter.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed 12V output version within the adjustable series
• Integrated 52kHz fixed-frequency oscillator
• TTL shutdown capability for low power standby
• Built-in thermal shutdown and current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• Simple high-efficiency step-down (buck) regulators
• Efficient pre-regulators for linear regulators
• On-card switching regulators
• Positive to negative converters (Buck-Boost)
• Power supply for battery chargers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin carefully, as TAEJIN Technology produces this component under license or as a compatible alternative to the original National Semiconductor design. Confirm the specific suffix 'R' indicates the correct package variant required for your PCB layout. Ensure datasheet specifications match your system's thermal and electrical requirements before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 12V output is required without external feedback resistors. It serves as a direct replacement for legacy designs using the standard LM2576 family. Consider the TO-220 package for through-hole mounting if heat dissipation allows, or verify thermal performance against the 3A load requirement in your specific enclosure environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2576 series of SIMPLE SWITCHER regulators. It is a widely used industry-standard buck converter topology. The '12' suffix denotes the fixed 12V output voltage option, distinguishing it from other versions like 3.3V, 5V, or the adjustable variant within the same product family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include the LM2576HV-12 for higher input voltage applications and generic LM2576-12 equivalents from manufacturers such as ON Semiconductor or Texas Instruments. Verify pinout compatibility and thermal resistance values when cross-referencing with these alternatives.