LM2575HVS-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575HVS-3.3 is a SIMPLE SWITCHER step-down voltage regulator manufactured by Texas Instruments, designed for high-voltage input applications. It provides a fixed 3.3V output with a maximum load current of 1A. The device operates from an input voltage range up to 60V and features an internal oscillator running at a typical frequency of 52kHz. It utilizes pulse-width modulation (PWM) control for efficient power conversion. The component is housed in a TO-263-5 surface-mount package, suitable for thermal management in compact designs.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage switching transistor capable of handling input voltages up to 60V
• Fixed 3.3V output configuration eliminates external feedback resistor requirements
• Internal frequency compensation simplifies external component count
• Thermal shutdown protection safeguards against overheating conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for high-voltage bus systems
• Pre-regulation stages for downstream linear regulators
• Battery-powered equipment requiring high-input voltage tolerance
• Industrial control power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix and manufacturer source when ordering, as the LM2575 series has been transitioned between National Semiconductor, Texas Instruments, and other entities. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability varies significantly across different manufacturing origins and legacy stock levels.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltages exceed standard 40V limits but require a simple buck topology. Ensure the PCB layout accommodates the TO-263-5 package for adequate heat dissipation. Verify that the required output current does not exceed 1A continuous. Consider the LM2575HV series variants if adjustable output or different voltage ratings are needed instead.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575HV family of SIMPLE SWITCHER regulators, which are designed for higher input voltage ranges compared to the standard LM2575. The 'HVS' designation indicates a high-voltage version with a 60V maximum input rating. The '-3.3' suffix specifies the fixed 3.3V output voltage option within this product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575HVS-3.3/NOPB is a direct equivalent from Texas Instruments. LM2575-3.3WU is a lower voltage variant (40V max input) from Microchip/Onsemi. LM2596 series devices offer similar functionality but may differ in efficiency and input voltage ranges.