LM2576HVSX-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576HVSX-ADJ is a high-voltage step-down switching regulator from the SIMPLE SWITCHER family, manufactured by Texas Instruments. It operates with an input voltage range of 4V to 60V and delivers up to 3A of output current. The device features an adjustable output voltage ranging from 1.23V to 57V. It utilizes a fixed switching frequency of 52kHz and includes internal thermal shutdown and current limiting. The component is housed in a TO-263-5 surface-mount package and supports operation across a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch capable of handling input voltages up to 60V
• Fixed 52kHz switching frequency reduces required external passive component size
• Internal compensation simplifies design and ensures stability under varying load conditions
• Built-in thermal shutdown and cycle-by-cycle current limiting for robust protection

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply architectures requiring high input voltage tolerance
• Efficient step-down conversion for battery-powered systems
• Pre-regulator stages for downstream linear regulators
• Industrial control systems operating in harsh thermal environments

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) to confirm RoHS compliance and lead-free status. Ensure the TO-263-5 package variant matches your PCB footprint requirements. Confirm that the maximum input voltage of 60V aligns with your system's peak supply conditions. Check datasheet specifications for thermal resistance values to validate heatsinking needs for your intended current load.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an adjustable output voltage is required within a high-input voltage range. It is suitable for designs prioritizing simplicity and low external component count. Consider the 52kHz frequency trade-off between efficiency and filter size. Evaluate thermal performance carefully, as the TO-263 package relies on board copper area for heat dissipation at higher currents.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576HV series, which extends the standard LM2576 capabilities to handle higher input voltages. It shares the same pinout and operational principles as other members of the SIMPLE SWITCHER family, facilitating easy migration from lower voltage or fixed-output variants while maintaining design consistency.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576HVS-ADJ/NOPB is a verified equivalent part number representing the same functional device in alternative packaging or sourcing channels.