LM2576HVS-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576HVS-3.3 is a monolithic integrated circuit from the SIMPLE SWITCHER series, functioning as a step-down (buck) switching voltage regulator. It provides a fixed 3.3V output with a maximum load current of 3A. The device supports an input voltage range up to 60V and operates at a fixed internal frequency of 52kHz. It includes built-in thermal shutdown and current limiting for protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed 3.3V output voltage with high efficiency compared to linear regulators
• Integrated 52kHz fixed-frequency oscillator simplifies design
• Built-in thermal shutdown and cycle-by-cycle current limiting
• Requires minimal external components for implementation

Voltage Regulators - DC DC Switching Regulators Applications

• Efficient step-down DC-DC conversion from higher voltage rails
• Pre-regulator stage for linear voltage regulators
• Direct drive for loads requiring stable 3.3V supply
• Battery-powered systems requiring high efficiency

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin carefully, as National Semiconductor was acquired by Texas Instruments. Ensure the part number suffix matches the specific package variant required. Confirm RoHS compliance status through official datasheets or distributor documentation before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is needed with up to 3A load capability. It is suitable for applications where input voltages exceed 40V. Consider the TO-263 package for surface mount implementations requiring robust thermal performance.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576HV family of non-synchronous buck converters. It is designed as a drop-in replacement for traditional three-terminal linear regulators in many applications, offering significantly reduced heat dissipation requirements and smaller solution sizes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible equivalents include the LM2576-3.3 for lower input voltage applications (up to 40V). Other SIMPLE SWITCHER series devices may offer similar functionality but require verification of pinout and electrical specifications.