LM2574N-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574N-5.0/NOPB is a Texas Instruments SIMPLE SWITCHER power converter featuring an integrated 0.5A switch. It operates as a step-down DC/DC regulator with a fixed 5V output. The device supports an input voltage range of 4V to 40V and utilizes a through-hole MDIP-8 package. Key electrical parameters include a switching frequency of 52kHz, a maximum output current of 500mA, and a quiescent current of 5mA. It functions within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 0.5A power switch for compact design
• Fixed 5V output eliminates external feedback resistors
• Internal frequency compensation simplifies external component selection
• Includes thermal shutdown and current limiting protection

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in distributed power systems
• Pre-regulator stages for switching regulators
• Battery-powered equipment requiring efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'N' confirms the MDIP-8 through-hole package variant rather than surface-mount options. Confirm the '-5.0' designation matches the required fixed 5V output level. Ensure the '/NOPB' indicates lead-free and RoHS compliance status. Cross-reference the manufacturer part number against official datasheets to validate pinout compatibility before integration into existing designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from inputs up to 40V. The through-hole MDIP-8 package suits prototyping or applications where manual assembly is preferred over SMT. Consider the 52kHz switching frequency for standard EMI profiles. Evaluate thermal requirements based on the 0.5A load capacity and ambient operating conditions within the specified industrial temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2574xx series of SIMPLE SWITCHER converters. It shares functional similarities with other members like the LM2574M (SOIC package) but differs in physical mounting style. The series is designed for high-efficiency buck conversions with minimal external components, targeting cost-sensitive and space-constrained power management solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574N-5.0/NOPB is the direct equivalent of LM2574N-5.0. Surface-mount alternatives include LM2574MX-5.0/NOPB. Verify pinout and thermal characteristics when substituting across package types.