LM2576HVS-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576HVS-12/NOPB is a SIMPLE SWITCHER® 3A step-down voltage regulator from Texas Instruments. It operates with an input voltage range of 4V to 63V and provides a fixed 12V output at up to 3A. The device features a 52kHz internal oscillator, TTL shutdown capability, and a low standby current of 5mA. It is housed in a TO-263-5 (D2PAK) surface-mount package and supports operation temperatures from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch eliminates the need for external blocking diodes.
• Fixed frequency internal oscillator allows for the use of small, cost-effective standard inductors.
• Built-in thermal shutdown and current limit protection ensure robust operation under fault conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• High-efficiency point-of-load regulation modules
• Pre-regulators for linear post-regulators
• Battery chargers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free status and RoHS compliance. Confirm the 'S' indicates the TO-263-5 surface mount package. Ensure the '-12' designation matches the required 12V fixed output voltage. Check datasheet for specific humidity sensitivity level requirements during assembly.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range up to 63V is required. It is suitable for applications needing a fixed 12V output with up to 3A load current. Consider the TO-263-5 package for adequate thermal dissipation without additional heatsinking in moderate environments.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576HV series, designed for higher input voltages compared to the standard LM2576. It simplifies design by integrating the switching element, reducing external component count. The series is widely used in industrial and automotive systems requiring reliable DC-DC conversion.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576HVS-12/NOPB is functionally compatible with National Semiconductor LM2576HVS-12. Verify pinout and electrical specifications match before substitution. Other manufacturers may offer equivalent parts but require careful validation of thermal and electrical limits.