LM2574HVN-15/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2574HVN-15/NOPB is a step-down switching voltage regulator from the Texas Instruments SIMPLE SWITCHER family, designed for high-voltage input applications. It operates with an input voltage range of 4V to 60V and provides a fixed 15V output at up to 500mA. The device utilizes a buck topology with a typical switching frequency of 58kHz. It is housed in an 8-pin PDIP package for through-hole mounting. The unit supports an operating temperature range from -40°C to +125°C and features internal current limiting and thermal shutdown.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch capable of delivering 500mA load current
• Fixed 15V output option eliminates external feedback resistor networks
• Internal compensation ensures stability with minimal external components
• Built-in thermal shutdown and current limit protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply architectures requiring high input voltage tolerance
• Battery-powered systems utilizing high-voltage battery packs
• Industrial control equipment power conditioning
• Telecommunications infrastructure power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'HV' confirms the 60V maximum input rating capability distinct from standard variants. Ensure the 'N' designation matches the required PDIP-8 through-hole package configuration. Confirm RoHS compliance status aligns with project environmental regulations. Cross-reference the manufacturer part number against official datasheets to validate the fixed 15V output specification before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltages exceed 40V but remain below 60V, as standard LM2574 devices are limited to 40V. Choose the HV variant over surface-mount options if through-hole assembly is mandated by mechanical constraints. Verify that the 500mA output current meets the load requirements without exceeding thermal limits. Consider the 58kHz switching frequency for inductor sizing and electromagnetic interference implications.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the LM2574HV series, which extends the input voltage range of the classic LM2574 family. It serves as a direct replacement for older non-RoHS versions while maintaining pin compatibility. The device simplifies design by integrating the controller, oscillator, and power switch into a single monolithic IC, reducing the bill of materials compared to discrete solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2574HVMX-15/NOPB offers identical electrical performance in a surface-mount SOIC-Wide-14 package.