LM2574N-15/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574N-15/NOPB is a SIMPLE SWITCHER® step-down switching regulator from Texas Instruments, designed for high-voltage input applications. It provides a fixed 15 V output with a maximum load current of 500 mA. The device operates within an input voltage range of 4 V to 40 V and supports both buck and inverting topologies. It features a typical switching frequency of 52 kHz and includes internal frequency compensation to minimize external component count. The unit is housed in an 8-pin MDIP package and is rated for operation between -40 °C and +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch capable of delivering up to 500 mA output current
• Fixed 15 V output option eliminates the need for external feedback resistors
• Internal frequency compensation reduces required external component count
• Operates efficiently across a wide input voltage range up to 40 V

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring regulated lower voltages
• Pre-regulators for downstream switching regulators
• Battery-powered systems utilizing high-voltage sources

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific part number corresponds to the through-hole MDIP-8 package variant rather than surface-mount options. Confirm the suffix /NOPB indicates lead-free and RoHS compliance as per manufacturer standards. Ensure design requirements align with the 40 V maximum input limit and 500 mA continuous current capability before ordering.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 15 V output is required from inputs up to 40 V. It is suitable for designs prioritizing simplicity and low external component count over adjustable output flexibility. Consider thermal management requirements due to power dissipation at higher input-to-output voltage differentials or near-maximum load currents.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2574x series of SIMPLE SWITCHER® regulators, which are known for ease of use and robust performance in buck converter applications. The 'N' designation specifically identifies the through-hole MDIP package, distinguishing it from the MX (SOIC) or HVM/HVN variants designed for higher input voltages up to 60 V.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574N-15: Non-RoHS compliant version of the same electrical specification and package.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM2574N-15/NOPB?

The maximum recommended input voltage is 40 V.

Does the LM2574N-15/NOPB support adjustable output voltages?

No, this specific part number provides a fixed 15 V output. Adjustable versions require different suffixes.