LM2574MX-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574MX-12/NOPB is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments, designed for high-efficiency DC-DC conversion. It operates with an input voltage range of 4 V to 40 V and provides a fixed 12 V output at up to 500 mA. The device utilizes a buck topology with a typical switching frequency of 58 kHz. Packaged in a surface-mount SOIC-Wide-14 format, it supports operation across an extended temperature range from -40 °C to +125 °C. Key features include integrated shutdown capability and low static current consumption.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch eliminates the need for external components typically required in discrete designs.
• Fixed internal feedback network ensures precise output voltage regulation without external resistor adjustments.
• Built-in thermal shutdown and current limiting protect the device under overload or short-circuit conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems requiring stable 12 V rails
• Pre-regulation stages for linear regulators in industrial control equipment
• Battery-powered devices utilizing buck conversion for efficiency improvement

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'MX' confirms the tape-and-reel packaging variant rather than tube packaging. Confirm the 'NOPB' designation indicates lead-free and RoHS compliance status as per manufacturer specifications. Ensure the operating environment remains within the specified -40 °C to +125 °C junction temperature limits to maintain reliability. 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 a 4 V to 40 V input source. The SOIC-Wide-14 package is suitable for applications prioritizing thermal performance and ease of assembly over minimal footprint. Consider the 58 kHz switching frequency for balancing component size and electromagnetic interference. This part is appropriate for designs needing integrated protection features without complex external circuitry.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2574 family of SIMPLE SWITCHER® regulators, known for simplifying power supply design through integrated functionality. The MX suffix denotes the surface-mount version, distinguishing it from through-hole alternatives like the LM2574N series. The family offers various fixed output voltages, allowing designers to standardize on a single controller architecture for multiple voltage rails.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574M-12/NOPB (Tube Packaging)

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM2574MX-12/NOPB?

The maximum input voltage is 40 V.

Does this device support shutdown mode?

Yes, the LM2574MX-12/NOPB includes a shutdown pin to disable the output and reduce quiescent current.