LM2574HVN-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574HVN-5.0/NOPB is a step-down switching voltage regulator from the SIMPLE SWITCHER family, manufactured by Texas Instruments. It operates with an input voltage range of 4 V to 40 V and provides a fixed output voltage of 5 V. The device supports a maximum output current of 500 mA and features a typical switching frequency of 58 kHz. Designed for through-hole mounting in an 8-pin PDIP package, it includes internal feedback compensation and a 5 mA quiescent current. The operational temperature range spans from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage switch capable of handling up to 40 V input
• Fixed output voltage options available without external adjustment components
• Internal frequency compensation simplifies external component selection
• Built-in thermal shutdown and current limit protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply architectures requiring buck conversion
• Pre-regulation stages for linear regulators
• Battery-powered systems with variable input sources
• Industrial control equipment power management

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number suffix, specifically /NOPB, to confirm lead-free compliance and RoHS status as documented. Ensure the ordering code matches the specific package variant required for your assembly process. Cross-reference the manufacturer's latest 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 5 V output is required from a higher voltage rail within the 4 V to 40 V input range. The through-hole PDIP-8 package is suitable for prototyping or applications where surface mount technology is not feasible. Consider the 500 mA current limit and 58 kHz switching frequency when designing passive components for the target application efficiency and ripple requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2574HV series, which distinguishes itself from standard LM2574 parts by supporting higher input voltages up to 40 V. The 'N' suffix indicates the PDIP-8 through-hole package, while 'HV' denotes the high-voltage capability. This series is part of Texas Instruments' SIMPLE SWITCHER line, focusing on ease of design with minimal external components.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574N-5.0/NOPB: Standard voltage version limited to 40 V input but identical package and function. LM2574M-5.0/NOPB: Surface-mount SOIC-14 equivalent with similar electrical characteristics. LM2574HVMX-5.0/NOPB: Tape-and-reel version of the surface-mount variant.