LM2586S-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2586S-12/NOPB is a SIMPLE SWITCHER step-up/flyback switching regulator from Texas Instruments. It operates with an input voltage range of 4 V to 40 V and provides a fixed 12 V output at up to 3 A. The device integrates a 55 V rated internal power switch and operates at a switching frequency of 100 kHz to 200 kHz. It utilizes current-mode control for rapid transient response and inherent line/feed-forward regulation. The component is housed in a TO-263 (D2PAK) surface-mount package, supporting operation temperatures from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-voltage power switch rated for 55 V within the controller package.
• Employs current-mode control architecture to ensure stable loop performance and fast transient response.
• Includes built-in thermal shutdown circuitry to protect against excessive junction temperatures.
• Features a low standby supply current to minimize power consumption during non-operational states.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Battery-powered systems requiring voltage step-up
• Industrial control power supplies
• Telecommunications equipment power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free status and RoHS compliance as per manufacturer specifications. Confirm the 'S' designation indicates the TO-263 surface-mount package variant rather than through-hole options. Ensure the '-12' identifier matches the required fixed 12 V output voltage for the target design. Cross-reference datasheet revisions to confirm pinout consistency if replacing legacy components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output is required from an input source between 4 V and 40 V. The 3 A continuous current capability suits moderate power applications. Consider the 100 kHz to 200 kHz switching frequency for balancing efficiency and external component size. Verify that the TO-263 package thermal characteristics meet the system's heat dissipation requirements without additional heatsinking.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2586 family of SIMPLE SWITCHER regulators, designed for simplified power supply development. The series offers various fixed voltage outputs and adjustable variants. The LM2586S-12/NOPB specifically addresses applications needing a robust, high-current step-up or flyback solution in a compact surface-mount form factor, distinguishing it from lower-current buck regulators in the broader portfolio.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct functional substitutes include other LM2586 variants with different output voltages or packages, such as LM2586T-12/NOPB for through-hole mounting. For higher current needs, consider the LM2587 series. Verify compatibility regarding switching frequency tolerance and thermal management requirements before substitution.