LM2576HVSX-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576HVSX-3.3/NOPB is a monolithic integrated circuit from the SIMPLE SWITCHER series, functioning as a high-voltage step-down switching regulator. It provides a fixed 3.3 V output with a maximum current of 3 A. The device operates within an input voltage range of 4 V to 60 V and utilizes a buck topology. Key electrical parameters include a fixed switching frequency of 52 kHz, a typical quiescent current of 5 mA, and an operating junction temperature range from -40 °C to +125 °C. It is housed in a TO-263-5 surface-mount package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated internal oscillator eliminates the need for external frequency compensation components.
• Includes thermal shutdown and cycle-by-cycle current limiting for robust fault protection.
• Features a dedicated shutdown pin to enable low-power standby operation.

Voltage Regulators - DC DC Switching Regulators Applications

• Efficient pre-regulators for linear power supplies
• Direct conversion from battery voltages
• Post-regulation for switched-mode power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) to confirm lead-free compliance and RoHS status. Ensure the ordering code matches the required TO-263-5 surface-mount package configuration. Confirm availability through authorized Texas Instruments distributors or verified partners to guarantee component authenticity and traceability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model for applications requiring a fixed 3.3 V output at up to 3 A from high input voltages up to 60 V. It serves as a direct replacement for standard LM2576 devices where higher input voltage capability is necessary. Consider the thermal performance requirements of the TO-263 package when designing the PCB layout for adequate heat dissipation.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2576HV family of SIMPLE SWITCHER regulators. It shares functional similarities with the LM2576SX-3.3 but supports a wider input voltage range. It differs from the adjustable LM2576HVS-ADJ by providing a fixed output voltage. The part is distinct from lower-current variants like the LM2575 series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576SX-3.3/NOPB