LM2576HVT-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576HVT-12/NOPB is a SIMPLE SWITCHER step-down voltage regulator from Texas Instruments, designed for high-voltage input applications. It operates with an input voltage range of 4 V to 63 V and delivers a fixed 12 V output at up to 3 A. The device utilizes a buck topology with a standard switching frequency of 52 kHz. It is housed in a TO-220-5 through-hole package, supporting operation across a temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic controller simplifies design by requiring minimal external components
• Built-in thermal shutdown protects against overheating during fault conditions
• Internal freewheeling diode reduces component count and board space requirements

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems
• Pre-regulator circuits for switching regulators
• Efficient straight-through regulation modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'HVT' confirms the high-voltage variant with TO-220-5 through-hole packaging. Ensure the '-12' designation matches the required 12 V fixed output voltage. Confirm 'NOPB' indicates lead-free and RoHS compliance. Cross-reference the manufacturer datasheet to validate pinout compatibility and thermal performance specifications before integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltages exceed 45 V, as standard LM2576 variants are limited to lower inputs. The TO-220 package provides robust thermal dissipation for continuous 3 A loads. Consider the 52 kHz switching frequency for balancing efficiency and passive component size. Verify that the application does not require synchronous rectification or adjustable output voltage.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 series of SIMPLE SWITCHER regulators. It shares architectural similarities with other fixed-output variants but is distinguished by its high-voltage capability (up to 63 V) and through-hole mounting style. The series is widely recognized for its simplicity and reliability in general-purpose DC-DC conversion tasks.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576HVT-12/NOPB is functionally equivalent to LM2576HVT-12. Other family members like LM2576T-12 differ in maximum input voltage limits.