LM2587T-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2587T-12 is a monolithic integrated circuit from the SIMPLE SWITCHER family, designed as a 5A flyback regulator. It operates with an input voltage range of 4V to 40V and provides a fixed 12V output. The device features a 100 kHz internal oscillator, current-mode control, and soft-start functionality. It includes comprehensive protection mechanisms such as thermal shutdown, cycle-by-cycle current limiting, and undervoltage lockout. The component is housed in a TO-220 package and supports operation across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Current-mode control architecture for improved transient response and line regulation
• Integrated 100 kHz fixed-frequency oscillator enabling compact magnetic component design
• Built-in soft-start circuitry to minimize inrush current during startup
• Robust protection suite including thermal shutdown and cycle-by-cycle current limiting

Voltage Regulators - DC DC Switching Regulators Applications

• Flyback converter designs requiring wide input voltage ranges
• General-purpose DC-DC power supply systems
• Industrial equipment power distribution networks

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix designation against the manufacturer's official datasheet to confirm pinout compatibility and electrical tolerances. Ensure that the procurement source provides documentation confirming RoHS compliance status. Cross-reference the part number with the latest Texas Instruments product change notifications to validate manufacturing origin and material composition updates prior to integration into production schedules.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required from a variable input source within the 4V to 40V range. The TO-220 package is suitable for applications where through-hole mounting and direct heatsinking are preferred over surface-mount solutions. Consider the 5A switch capability and 65V breakdown voltage when designing transformers and selecting external diodes for the target flyback topology.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2587 series of SIMPLE SWITCHER regulators, which are engineered for high-efficiency step-up and flyback applications. The series distinguishes itself by minimizing external component count while maintaining robust performance. The LM2587T variant specifically utilizes the TO-220 form factor, offering distinct thermal and mechanical advantages compared to the SMD-based LM2587S counterparts within the same functional family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2587T-12/NOPB