LM2586SX-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2586SX-3.3 is a step-up (boost) and flyback switching voltage regulator manufactured by Texas Instruments, part of the SIMPLE SWITCHER family. It provides a fixed 3.3V output with a maximum switch current of 3A. The device operates within an input voltage range of 4V to 40V and supports switching frequencies between 100kHz and 200kHz. Designed for surface-mount applications, it utilizes a TO-263 (DDPAK-7) package. The component functions as a positive output regulator and is rated for operation across a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-current power switch capable of delivering up to 3A output current
• Fixed 3.3V output configuration simplifies external feedback network requirements
• Supports boost and flyback topologies for versatile DC-DC conversion applications

Voltage Regulators - DC DC Switching Regulators Applications

• General-purpose DC-DC step-up power supply circuits
• Flyback converter designs requiring fixed low-voltage outputs
• Portable electronic devices utilizing battery inputs
• Industrial control systems requiring isolated or non-isolated regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific ordering suffix matches the required package variant and lead-free status. Confirm the manufacturer source is authorized to ensure component authenticity. Check datasheet revisions for any updates regarding thermal performance or electrical characteristics prior to finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required from an input voltage ranging between 4V and 40V. Ensure the application demands a boost or flyback topology rather than buck conversion. Verify that the load current does not exceed the 3A internal switch limit and that the operating environment falls within the specified temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2586 series of SIMPLE SWITCHER regulators, which are designed for ease of use in power management applications. The 'SX' designation indicates the surface-mount TO-263 package type, while '-3.3' specifies the fixed output voltage. It is distinct from adjustable variants like the LM2586S-ADJ.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2586S-3.3/NOPB