LM2591HVS-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2591HVS-12 is a high-voltage step-down switching regulator IC manufactured by UMW. It operates with an input voltage range up to 60V and provides a fixed 12V output at a maximum current of 1A. The device utilizes a buck topology with a fixed switching frequency of 150kHz. It is housed in a TO-263-5L surface-mount package and supports an operating junction temperature range from -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch capable of handling input voltages up to 60V
• Fixed internal oscillator for stable 150kHz switching operation
• Built-in thermal shutdown and current limiting protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial control systems
• High-voltage battery-powered equipment power supplies
• Distributed power supply architectures requiring 12V rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer marking on the component body matches UWM specifications. Confirm the suffix indicates the fixed 12V output variant rather than adjustable or other voltage options. Ensure the package type corresponds to the required PCB footprint and thermal management strategy.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required from a high-voltage source up to 60V. It is suitable for designs needing 1A continuous current without external feedback resistors. Consider thermal dissipation requirements due to the linear relationship between input-output voltage differential and power loss.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2591HV series, which are monolithic integrated circuits providing all active functions for a step-down (buck) switching regulator. The series is designed to drive loads directly from high-voltage inputs with minimal external components.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Cross-reference with LM2591HVS-12/NOPB from Texas Instruments for pin-compatible alternatives. Verify that substitute parts maintain the same 150kHz frequency and 1A current rating.