LM2590HVSX-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2590HVSX-3.3/NOPB is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a step-down switching regulator with a fixed 3.3 V output and 1 A maximum output current. It operates at a 150 kHz switching frequency within an input voltage range of 4.5 V to 60 V. The device utilizes a TO-263-7 (DDPAK-7) surface-mount package and supports junction temperatures from -40 °C to +125 °C. It features a typical quiescent current of 5 mA and includes internal compensation for minimal external component requirements.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage switch enables direct connection to standard bus voltages without additional components
• Fixed 3.3 V output option eliminates the need for external feedback resistors
• Internal frequency compensation simplifies design by reducing required external parts count
• Thermal shutdown protection safeguards the device during overload or excessive temperature conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for distributed power architectures
• Pre-regulation stages for downstream linear regulators
• Battery-powered systems requiring efficient step-down conversion
• Industrial control modules operating from higher voltage buses

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the presence of the /NOPB suffix to confirm RoHS compliance and lead-free construction. Confirm the specific 'SX' tape-and-reel packaging variant against your assembly requirements. Ensure the fixed 3.3 V output matches your circuit design, as adjustable versions exist within the same family. Cross-reference the manufacturer part number directly with official Texas Instruments documentation to avoid counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required alongside high input voltage tolerance up to 60 V. The TO-263-7 package provides adequate thermal dissipation for 1 A continuous loads in moderate airflow environments. Consider the 150 kHz switching frequency for balancing efficiency and passive component size. Verify that the internal switch current limit meets your peak load demands without external sensing.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2590HV series of SIMPLE SWITCHER converters, designed for high-input voltage applications. Unlike the lower-voltage LM2590, the HV variant supports inputs up to 60 V. The /NOPB designation indicates a non-halogenated, RoHS-compliant version of the original LM2590HVSX-3.3. It serves as a drop-in replacement for legacy non-RoHS parts in existing designs requiring updated environmental compliance.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM2590HVSX-3.3 is listed as obsolete. The LM2590HVSX-3.3/NOPB is confirmed as a direct replacement. Verify pinout compatibility and thermal characteristics when transitioning from older manufacturing lots.