LM2574M-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574M-12/NOPB is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a step-down switching voltage regulator. It operates with an input voltage range of 4 V to 40 V and provides a fixed output voltage of 12 V. The device supports a maximum output current of 500 mA and utilizes a buck topology. Key electrical parameters include a typical switching frequency of 58 kHz and a static current of 5 mA. It is housed in a 14-pin SOIC-Wide package and is rated for operation between -40 °C and +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic controller and power switch for simplified design
• Fixed output voltage options eliminate external feedback resistor networks
• Internal frequency compensation ensures stability without external components
• Built-in thermal shutdown protects against overheating conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation modules
• Pre-regulators for downstream linear regulators
• Battery-powered systems requiring efficient voltage stepping
• General-purpose DC-DC conversion circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number suffix, specifically /NOPB, to confirm lead-free compliance and specific packaging configuration. Ensure the ordering code matches the required SOIC-Wide-14 package variant. Cross-reference the manufacturer datasheet revision to confirm pinout compatibility and electrical specifications before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output is required from a higher input voltage source up to 40 V. The 500 mA current limit suits low-power applications. Consider the 58 kHz switching frequency for passive component sizing. Verify that the load requirements do not exceed the thermal capabilities of the SOIC-Wide-14 package under expected ambient conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2574 family of SIMPLE SWITCHER regulators. It shares architectural similarities with the LM2574HV series but differs in maximum input voltage ratings. The 'M' designation indicates the surface-mount SOIC package, while the '-12' specifies the fixed 12 V output version within the product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574MX-12/NOPB: Pin-compatible tape-and-reel variant of the same device.

Voltage Regulators - DC DC Switching Regulators FAQ

Does the LM2574M-12 require external feedback resistors?

No, the LM2574M-12 has a fixed internal feedback network that sets the output voltage to 12 V, eliminating the need for external resistors.

What is the maximum input voltage for this regulator?

The maximum input voltage rating for the standard LM2574M-12 is 40 V.