LM2591HVSX-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2591HVSX-ADJ/NOPB is a SIMPLE SWITCHER power converter from Texas Instruments, utilizing a buck topology to provide step-down voltage regulation. It operates with a fixed switching frequency of 150 kHz and supports an input voltage range from 4.5 V to 60 V. The device delivers a continuous output current of 1 A with an adjustable output voltage ranging from 1.2 V to 57 V. It features a typical quiescent current of 5 mA and functions within an operating temperature range of -40 °C to +125 °C. The component is housed in a TO-263-5 surface-mount package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-voltage power switch capable of handling up to 60 V input for simplified design
• Includes internal frequency compensation to minimize external component count
• Features thermal shutdown and current limit protection for system reliability

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial control systems requiring wide input voltage ranges
• Battery-powered equipment needing efficient step-down conversion
• Distributed power supply architectures

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) against the manufacturer's datasheet to confirm RoHS compliance and lead-free status. Ensure the ordering part number matches the exact package variant required for your PCB footprint. Cross-reference the revision level to guarantee compatibility with existing design files and application notes.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 1 A output current is sufficient and an adjustable output voltage is required. It is suitable for designs where a 150 kHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the TO-263-5 package for its thermal performance and ease of assembly in surface-mount applications.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2591HV series of SIMPLE SWITCHER regulators. It is designed as a high-voltage version of the standard LM2591, offering enhanced input voltage tolerance. The series is known for reducing design complexity by integrating the power switch and control circuitry into a single monolithic IC.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.