LM2591HVS-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2591HVS-5.0 is a step-down voltage regulator IC from the LM2591HV series manufactured by UMW. It operates as a buck converter with a fixed 5.0V output, supporting up to 1A continuous load current. The device accepts input voltages ranging from 4.5V to 60V and switches at a frequency of 150kHz. It features an internal power switch and is housed in a TO-263-5 (D2PAK) surface-mount package. The component functions within a junction temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage power switch for direct connection to high-side bus lines
• Fixed 5.0V output configuration eliminates external feedback resistor requirements
• Internal frequency compensation simplifies external component count
• Thermal shutdown and current limit protection ensure operational reliability

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for high-voltage input systems
• Pre-regulation stages for downstream linear regulators
• Battery-powered equipment requiring efficient step-down conversion
• Industrial control boards utilizing 12V or 24V input rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify manufacturer origin as UMW rather than Texas Instruments when sourcing this specific part number. Confirm the suffix indicates the fixed 5.0V variant to avoid confusion with adjustable versions. Check RoHS compliance status against local regulatory requirements. Ensure packaging type matches assembly line specifications. Validate authenticity through authorized distribution channels.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Choose this model when a stable 5V supply is required from inputs exceeding 6V. The 1A current rating suits moderate power applications without excessive heat dissipation. The TO-263 package provides adequate thermal performance for board-level mounting. Consider the 150kHz switching frequency for EMI constraints compared to higher-frequency alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2591HV family of SIMPLE SWITCHER converters. It shares architectural similarities with the LM2592HV but offers lower current capacity. The series is designed for high-input voltage applications where standard regulators fail. It serves as a robust alternative to traditional three-terminal linear regulators in high-difference scenarios.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

• LM2591HVS-5.0/NOPB
• LM2591HVT-5.0/NOPB