LM2575MX-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575MX-5.0/NOPB is a Texas Instruments SIMPLE SWITCHER power converter, specifically a 1A step-down voltage regulator. It operates with a fixed 5V output and supports input voltages up to 40V. The device utilizes a buck topology with a standard switching frequency of 52kHz. It is housed in an SOIC-8 surface-mount package and functions within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switching regulator designed for high-efficiency step-down conversion
• Fixed internal oscillator eliminates the need for external timing components
• Built-in thermal shutdown and current limiting protect against overload conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring efficient voltage regulation
• Pre-regulators for linear post-regulator circuits
• Battery-powered applications utilizing step-down topologies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) to confirm lead-free status and RoHS compliance. Ensure the ordering part number matches the required package type, as the base model may be available in multiple form factors. Cross-reference the manufacturer's latest datasheet to confirm active status and any recent pinout or electrical specification updates before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from an input source between 4V and 40V. It is suitable for designs needing 1A continuous load current with minimal external component count. Consider the SOIC-8 package for space-constrained surface-mount layouts where moderate heat dissipation is manageable without extensive PCB copper area.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2575 family of SIMPLE SWITCHER regulators, which are known for simplifying DC-DC converter design. The MX suffix indicates the SOIC-8 surface-mount package variant. It serves as a direct replacement for older National Semiconductor equivalents and offers improved integration compared to discrete switcher solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575S-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

What is the typical switching frequency of the LM2575MX-5.0?

The device features a fixed internal oscillator operating at a nominal frequency of 52kHz.

Does the LM2575MX-5.0 require external feedback resistors?

No, the -5.0 variant has a fixed internal feedback network that sets the output voltage to 5V, eliminating the need for external resistors.