LM2576HVS-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The UMW LM2576HVS-5.0 is a monolithic integrated circuit functioning as a step-down switching regulator within the SIMPLE SWITCHER family. It provides a fixed 5.0V output with a maximum load current of 3A. The device supports an input voltage range from 4V to 60V, accommodating high-voltage applications. It operates at a fixed internal frequency of 52kHz and utilizes a TO-263-5 surface-mount package. The component includes built-in thermal shutdown and current limiting protection mechanisms.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed 5.0V output voltage with ±4% tolerance under specified conditions
• High input voltage capability up to 60V for HV series operation
• Integrated 52kHz fixed-frequency oscillator simplifies external component selection
• Built-in thermal shutdown and per-cycle current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• Simple efficient buck regulators
• Pre-regulators for linear regulators
• On-card switching regulators
• Positive-to-negative converters (Buck-Boost)

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the marking on the physical component matches 'LM2576HVS-5.0' and confirms the manufacturer as UMW. Ensure the package type corresponds to TO-263-5 (DDPAK/TO-263). Confirm the suffix indicates the standard operating temperature range (-40°C to +125°C) and lead-free status if required by your assembly process specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 5V output is required from an input source between 4V and 60V. It serves as a direct replacement for National Semiconductor or Texas Instruments equivalents in existing designs. Consider the 3A current capacity and 52kHz switching frequency for inductor sizing. Verify that the thermal performance of the TO-263-5 package meets the heat dissipation requirements of the specific application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2576HV series of non-synchronous buck converters. Unlike the standard LM2576 limited to 40V input, the HV variant handles up to 60V. It replaces traditional three-terminal linear regulators, offering higher efficiency and reduced need for large heat sinks. The series is widely used in industrial and automotive systems requiring robust step-down conversion.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible substitutes include TI LM2576HVSX-5.0/NOPB and National Semiconductor LM2576HVS-5.0. These parts share identical electrical characteristics and pinouts. Verify that alternative sources confirm the same 60V max input rating and 3A continuous current capability before substitution.