LM2575HVSX-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575HVSX-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 60 V and provides a fixed 12 V output at up to 1 A load current. The device utilizes a buck topology with a typical switching frequency of 58 kHz. It is housed in a TO-263-5 (D²PAK) surface-mount package and supports operation within a temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic controller for simplified design
• Fixed 12 V output option eliminates external feedback network
• Internal frequency compensation reduces external component count
• Thermal shutdown protection ensures reliability under overload

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial power supplies requiring high input voltage tolerance
• Distributed power systems with bus voltages up to 60 V
• Pre-regulators for downstream switching regulators
• Battery-powered equipment charging circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance per manufacturer specifications. Confirm the 'SX' designation indicates tape-and-reel packaging suitable for automated assembly. Ensure the part number matches the specific 12 V fixed output variant rather than adjustable or other voltage versions. Cross-reference the datasheet revision date to ensure compatibility with current design standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output is required from inputs ranging up to 60 V. The TO-263-5 package offers thermal performance advantages over smaller SOT packages for 1 A loads. Consider the 58 kHz switching frequency for balancing efficiency and passive component size. Verify that the application does not require synchronous rectification or multiple outputs, as this is a single-output non-synchronous buck converter.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575HV series of SIMPLE SWITCHER power converters. The series is characterized by its ability to handle high input voltages while maintaining simplicity through integrated control circuitry. The LM2575HVSX-12/NOPB specifically represents the surface-mount version with a fixed 12 V output, differing from the adjustable variants and through-hole TO-220 counterparts.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible substitutes include LM2575S-12/NOPB for lower voltage input ranges (up to 40 V). For higher current requirements, consider the LM2576 series. Verify thermal dissipation capabilities if replacing with devices having different package thermal resistances.