LM2576R-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576R-5.0 is a monolithic integrated circuit step-down switching regulator from the TAEJIN LM2576 series, designed for easy and convenient buck converter design. It provides a fixed 5.0V output voltage with a guaranteed maximum load current of 3.0A. The device operates with a wide input voltage range and utilizes a 52kHz fixed-frequency internal oscillator. It requires only four external components to function effectively.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed 5.0V output version available within the LM2576 series
• Capable of driving a 3.0A load with excellent line and load regulation
• Features a 52kHz fixed frequency internal oscillator
• Includes thermal shutdown and current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• Simple high-efficiency step-down (buck) regulator
• Efficient pre-regulator for linear regulators
• On-card switching regulators
• Positive to negative converter (Buck-Boost)
• Negative step-up converters

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin carefully as the LM2576 series is widely produced by multiple vendors including National Semiconductor, ON Semiconductor, and others. Confirm that the specific 'R' suffix corresponds to the required package type and that the component is sourced from an authorized distributor to ensure authenticity and compliance with RoHS standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required at up to 3A. Ensure the input voltage falls within the specified operating range for the standard LM2576 variant. Consider the 52kHz switching frequency for inductor selection. Verify if the TO-263 or TO-220 package suits the thermal requirements of the application.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 family of SIMPLE SWITCHER power controllers. These are popular buck converters known for requiring minimal external components. The '5.0' designation indicates a fixed 5-volt output, distinguishing it from adjustable or other fixed voltage variants like 3.3V or 12V.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include LM2576T-5.0/NOPB from Texas Instruments or LM2576-5.0 from ON Semiconductor. Ensure pinout compatibility and thermal performance match the original design constraints.