LM2591HVS-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2591HVS-ADJ is a step-down switching regulator manufactured by UMW, designed for high-voltage input applications. It operates as a buck converter with an adjustable output voltage ranging from 1.2V to 57V. The device supports a maximum output current of 1A and features a fixed switching frequency of 150kHz. It accepts input voltages up to 60V and includes internal protection mechanisms such as thermal shutdown and current limiting. The component is housed in a TO-263-5L surface-mount package and is rated for operation within a junction temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch capable of handling inputs up to 60V
• Adjustable output voltage control via external resistor network
• Built-in thermal shutdown and current limit protection circuits

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring high input voltage
• Battery-powered equipment utilizing step-down regulation
• Pre-regulator stages for downstream switching regulators

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation matches UMW rather than Texas Instruments or other producers, as part numbers may be shared across multiple fabricators. Confirm the specific suffix indicates the adjustable variant and the correct package type. Ensure compliance with RoHS3 standards if required by your assembly specifications. Cross-reference the datasheet revision to confirm pinout and electrical characteristics align with your design requirements before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a single-output buck topology is required with an input voltage exceeding standard low-voltage regulators. The 1A current rating suits moderate load applications where efficiency at 150kHz is prioritized. Consider the thermal performance of the TO-263 package for heat dissipation needs. Verify that the external inductor selection supports the 150kHz switching frequency to maintain stable regulation and minimize ripple effects on the output voltage.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2591HV series, which represents the high-voltage variant of the SIMPLE SWITCHER family. Unlike the standard LM2591, the HV version supports higher input voltages up to 60V. It shares functional similarities with the LM2592 but differs in output current capability, providing 1A instead of 2A. The series is widely recognized for its simplicity, requiring minimal external components to implement a robust DC-DC conversion stage.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2591HVSX-ADJ/NOPB