LM2590HVT-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2590HVT-3.3/NOPB is a monolithic integrated circuit step-down (buck) switching regulator from the LM2590HV series, manufactured by Texas Instruments. It provides a fixed positive output voltage of 3.3 V with a maximum output current of 1 A. The device operates at a fixed switching frequency of 150 kHz and accepts an input voltage range from 4.5 V to 60 V. It utilizes a TO-220-7 through-hole package with formed leads. The component supports junction temperatures between -40°C and +125°C and features a typical operating supply current of 5 mA.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated buck switching regulator topology for efficient DC-DC conversion
• Fixed 3.3 V output voltage configuration
• High input voltage capability up to 60 V
• Internal oscillator for fixed 150 kHz switching frequency

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in high-voltage systems
• Pre-regulation for downstream linear regulators
• Battery-powered equipment requiring step-down conversion
• Industrial control power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor, while retaining the original part number structure. Confirm the suffix NOPB indicates lead-free and RoHS compliance. Ensure the package type matches the TO-220-7 form factor with formed leads for through-hole mounting. Cross-reference the datasheet revision to ensure compatibility with specific thermal and electrical requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required from an input source ranging up to 60 V. The 1 A current rating suits moderate load applications without external pass transistors. The through-hole TO-220-7 package facilitates easy heat dissipation and prototyping. Consider the 150 kHz frequency for balancing component size and efficiency against switching losses.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2590HV SIMPLE SWITCHER family, designed for high-voltage step-down applications. Unlike standard LM2590 variants, the HV series supports input voltages up to 60 V. The device integrates a fixed-frequency oscillator, error amplifier, and power switch into a single monolithic IC, simplifying design compared to discrete solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2590HVT-5.0/NOPB offers identical electrical characteristics except for a fixed 5.0 V output. LM2590HVT-ADJ/NOPB provides an adjustable output voltage range. Verify pinout compatibility and thermal performance when substituting within the LM2590HV series.