LM2590HVSX-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2590HVSX-3.3 is a SIMPLE SWITCHER power converter from Texas Instruments, functioning as a step-down (buck) switching voltage regulator. It provides a fixed 3.3 V output with a maximum current capability of 1 A. The device operates with an input voltage range from 4.5 V to 60 V and utilizes a fixed switching frequency of 150 kHz. It is housed in a TO-263-8 (D2PAK-7) surface-mount package. The component supports an operating junction temperature range from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic controller for simplified buck converter design
• Fixed internal switching frequency reduces external component count
• Built-in thermal shutdown and current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for high-voltage bus systems
• Efficient step-down conversion from 48 V or 60 V industrial buses
• Pre-regulation stages for downstream linear regulators

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix configuration against the manufacturer's latest documentation, as the LM2590HVSX-3.3 designation may indicate legacy status or specific packaging variants. Confirm RoHS compliance and REACH SVHC declarations directly from the official datasheet before integration. Ensure the ordering part number matches the required tape-and-reel quantity and pinout specifications for the target PCB footprint.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required from inputs up to 60 V. The 150 kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the TO-263 package thermal performance for the expected load current. Verify that the application does not require adjustable output voltages, in which case the ADJ variant should be selected instead.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2590HV series of SIMPLE SWITCHER converters. It shares architectural similarities with the LM2591 series but differs in pin configuration and package options. The HV designation indicates support for higher input voltages compared to standard low-voltage regulators. It is designed for applications requiring robust performance in noisy environments with wide input voltage variations.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2590HVSX-3.3/NOPB is listed as a direct replacement option.