LM2575HVS-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575HVS-3.3 is a SIMPLE SWITCHER® 1A step-down voltage regulator manufactured by Texas Instruments, utilizing the TO-263-5 (DDPAK) surface-mount package. It provides a fixed 3.3V output with a maximum load current of 1A. The device supports a wide input voltage range from 4V to 60V and operates at a fixed switching frequency of 58kHz. It functions within an extended temperature range of -40°C to +125°C. Key electrical parameters include a typical operating supply current of 5mA and a specified output voltage tolerance of ±4% under line and load conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch capable of driving 1A loads without external heat sinks in many applications
• Fixed internal oscillator for simplified design with minimal external component requirements
• Built-in thermal shutdown and cycle-by-cycle current limiting for comprehensive fault protection

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring high input voltages
• Efficient pre-regulators for downstream linear regulators
• Standard 48V telecom supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin as the model number is primarily associated with Texas Instruments. Confirm the specific suffix 'S' denotes the TO-263-5 surface mount package. Check RoHS compliance status and lead times if available through authorized channels. Ensure the part matches the required 3.3V fixed output specification.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required from inputs up to 60V. The TO-263-5 package offers a balance of thermal performance and board space efficiency. Consider the 58kHz switching frequency for standard inductor selection. Verify that the 1A current rating meets the application's peak load demands.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575HV series of monolithic integrated step-down switching regulators. The series includes variants for different output voltages and packages. The HV designation indicates support for higher input voltages compared to standard LM2575 devices. It serves as a high-efficiency alternative to traditional linear regulators.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include LM2575HVS-3.3/NOPB and LM2575HVS-3.3/NO. Verify pinout compatibility and thermal characteristics before substitution.