LM2574M-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574M-5.0/NOPB is a Texas Instruments SIMPLE SWITCHER® step-down voltage regulator featuring a fixed 5.0 V output and 500 mA maximum current capability. It operates from an input voltage range of 4 V to 40 V with a typical switching frequency of 52 kHz. The device utilizes a Buck topology and is housed in a 14-pin SOIC-Wide package. It supports a shutdown mode, draws 5 mA of quiescent current, and functions within a temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic Buck converter for efficient step-down regulation
• Fixed 5.0 V output option eliminates external resistor networks
• Built-in thermal shutdown and current limiting protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Pre-regulator stages for linear regulators
• Battery-powered equipment power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB indicates lead-free compliance and RoHS adherence. Confirm the M variant specifies the SOIC-Wide-14 surface mount package. Ensure the -5.0 designation matches the required 5 V fixed output voltage. Cross-reference the manufacturer part number against official datasheets to validate authenticity and revision status before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required from inputs up to 40 V. The 52 kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the SOIC-14 package constraints for thermal management. Verify that the 500 mA load requirement does not exceed the device's continuous current rating under expected operating temperatures.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2574xx series of SIMPLE SWITCHER® regulators. It shares functional similarities with the LM2594 but offers a lower switching frequency. The LM2574HVM variants support higher input voltages up to 60 V. The LM2574N provides a through-hole alternative in an MDIP package.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

• LM2574MX-5.0/NOPB (Tape and Reel version)
• LM2574M-5.0 (Non-NOPB version)

Voltage Regulators - DC DC Switching Regulators FAQ

What is the switching frequency of the LM2574M-5.0/NOPB?

The typical switching frequency is 52 kHz.

Does this device support external adjustment of the output voltage?

No, the -5.0 suffix indicates a fixed 5.0 V output; adjustable versions use different suffixes.