LM2576HVS-3.3-EV

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576HVS-3.3-EV is a monolithic integrated circuit from the LM2576 series, functioning as a step-down (buck) switching regulator manufactured by EVVO. It provides a fixed 3.3V output with a guaranteed 3A load current capability. The device supports a wide input voltage range up to 60V and operates at a fixed internal frequency of 52kHz. Packaged in TO-263-5L surface-mount format, it includes internal frequency compensation and an oscillator. The component features thermal shutdown and cycle-by-cycle current limiting for fault protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed 3.3V output voltage with high efficiency buck topology
• Integrated 52kHz fixed-frequency oscillator requiring minimal external components
• Built-in thermal shutdown and cycle-by-cycle current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• Simple high-efficiency step-down DC/DC converters
• Efficient pre-regulators for linear power supplies
• Local card-level regulation systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation EVVO against original National Semiconductor or Texas Instruments documentation when sourcing. Confirm the suffix 'EV' indicates specific packaging or variant details rather than functional changes. Ensure the TO-263-5L package matches the target PCB footprint. Cross-reference the part number with official datasheets to validate the 60V maximum input rating and 3A continuous current specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring a robust 3A buck converter with a high input voltage tolerance up to 60V. The fixed 3.3V output eliminates the need for external feedback resistors, simplifying the bill of materials. Consider the TO-263-5L package for its thermal performance and surface-mount compatibility. Verify that the 52kHz switching frequency aligns with the available standard inductor sizes for the application.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 family of SIMPLE SWITCHER regulators, which are widely recognized as efficient replacements for traditional three-terminal linear regulators. The HV variant specifically extends the input voltage capability compared to standard versions. The EVVO branding suggests a compatible or equivalent source for this legacy topology, maintaining the core electrical characteristics of the original industry-standard design.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include the LM2576HV-3.3 and LM2576HV-3.3/NOPB. These parts share identical pinouts and electrical specifications. Verify that any replacement maintains the 60V input rating and 3A output current capacity.