LM2585T-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2585T-5.0/NOPB is a 3-A flyback switching regulator IC manufactured by Texas Instruments, formerly National Semiconductor. It operates with an input voltage range of 4 V to 40 V and provides a fixed positive output of 5 V. The device supports step-up, wide VIN flyback, forward, and inverting converter topologies. It is housed in a TO-220 (NDH) package with five formed leads. The component functions as a boost, flyback, or forward converter switching regulator IC, designed for high-efficiency power conversion applications requiring robust thermal performance.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Supports multiple converter topologies including boost, flyback, forward, and inverting configurations
• Integrated 3-A switch capability for high current handling
• Wide input voltage range from 4 V to 40 V
• Fixed 5 V output voltage option

Voltage Regulators - DC DC Switching Regulators Applications

• Wide input voltage flyback power supplies
• Step-up DC-DC conversion circuits
• Forward converter designs
• Inverting power supply architectures

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the suffix NOPB indicates RoHS compliance and lead-free construction. Ensure the package type matches the TO-220 (NDH) specification with five pins. Cross-reference the part number against official TI documentation to confirm active production status and availability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required from a 4 V to 40 V input source. Consider the TO-220 package for superior heat dissipation in high-current applications. Evaluate the need for flyback or forward topology support. Verify that the 3-A switch current rating meets the load requirements without exceeding thermal limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2585 series of SIMPLE SWITCHER regulators. It shares functional similarities with other members like the LM2575 but is optimized for higher input voltages up to 40 V. The series is known for ease of use and flexibility in designing efficient power conversion systems.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Official substitute part numbers include LM2585T-ADJ/NOPB for adjustable output variants within the same family.