LM2585T-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2585T-5.0 is a step-down switching regulator from the LM2585 series, manufactured by National Semiconductor. It integrates a 3A power switch and operates with an input voltage range up to 40V. The device provides a fixed 5.0V output voltage. Key features include internal frequency compensation for minimal external components, current limit protection, thermal shutdown, and a 52kHz oscillator. It is housed in a TO-263 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-current power switch rated for 3A continuous load
• Includes built-in frequency compensation to reduce external component count
• Features comprehensive protection mechanisms including current limiting and thermal shutdown

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Efficient step-down power supplies for digital logic circuits
• Battery-powered systems requiring regulated 5V rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation as National Semiconductor or Texas Instruments, following the acquisition of the semiconductor division. Confirm the suffix 'T' indicates the TO-263 surface-mount package. Ensure the '-5.0' suffix corresponds to the fixed 5.0V output version. Check datasheet revisions for any pinout or electrical parameter updates.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required with input voltages up to 40V. It is suitable for applications needing up to 3A output current where efficiency is prioritized over noise sensitivity compared to linear regulators. Consider the thermal performance of the TO-263 package for heat dissipation requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2585 family of adjustable and fixed-output step-down switching regulators. These devices are designed to simplify the design of buck converters by integrating the control circuitry and power switch into a single monolithic IC, reducing board space and assembly complexity.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible replacements include the LM2585-5.0 (through-hole) and equivalents from other manufacturers such as the TPS5430 or MP2307, provided they support similar input voltage ranges and output currents.