LM2585SX-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2585SX-5.0/NOPB is a SIMPLE SWITCHER 3A Flyback Regulator manufactured by Texas Instruments, originally developed under the National Semiconductor brand. It operates with an input voltage range of 4V to 40V and provides a fixed 5.0V output. The device supports a maximum switch current of 3A and functions at a switching frequency of approximately 115kHz. It is housed in a TO-263-5 (DDPAK-5) surface-mount package and is rated for operation between -40°C and +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated flyback topology regulator designed for wide input voltage applications
• Fixed 5.0V output configuration with 3A switch current capability
• Operates within a -40°C to +125°C junction temperature range

Voltage Regulators - DC DC Switching Regulators Applications

• Flyback converter designs requiring fixed 5V output
• Power supplies for systems with 4V to 40V input ranges
• Industrial control power modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the component matches the specific LM2585SX-5.0/NOPB designation, as the LM2585 family includes various output voltages and pin configurations. Confirm the manufacturer origin, noting that Texas Instruments acquired National Semiconductor's semiconductor business. Ensure the package type corresponds to the TO-263-5 form factor and check for RoHS compliance status if required by your assembly process.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 5V output is required from a wide input voltage range up to 40V. It is suitable for applications needing up to 3A of switch current in a flyback topology. Consider the thermal performance of the TO-263-5 package for heat dissipation requirements. Compare against other SIMPLE SWITCHER regulators like the LM2586 if shutdown functionality or different current ratings are needed.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the SIMPLE SWITCHER family of power management ICs, which integrates power switches and control circuitry into a single package. The LM2585 series specifically targets flyback applications, offering a simplified design approach compared to discrete solutions. Originally a National Semiconductor product, it is now supported by Texas Instruments following their acquisition.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM2585 variants with compatible output voltages, such as LM2585S-3.3/NOPB or LM2585S-12/NOPB, provided the voltage requirement differs. For functional equivalents with similar specifications, consider the LM2586 series, though it may include additional features like shutdown pins.