LM2587S-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2587S-ADJ/NOPB is a SIMPLE SWITCHER step-up/flyback regulator from Texas Instruments, housed in a TO-263-5 surface-mount package. It supports an input voltage range of 4 V to 40 V and delivers up to 5 A output current with adjustable output voltage. The device operates at a fixed switching frequency of 100 kHz and includes internal features such as current-mode control, soft-start, and thermal shutdown. It functions within a temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 5.0 A, 65 V NPN power switch for high-current handling
• Employs current-mode control architecture for improved transient response
• Includes internal soft-start circuitry to limit inrush current during startup
• Provides comprehensive protection via overcurrent limiting and thermal shutdown

Voltage Regulators - DC DC Switching Regulators Applications

• Flyback converter designs requiring wide input voltage ranges
• Boost converter applications for battery-powered systems
• Positive-to-negative converter circuits
• Pre-regulation stages for downstream linear regulators

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., NOPB) against the manufacturer's datasheet to confirm lead-free compliance and exact pinout configuration. Ensure the ordering part number matches the required package variant and temperature rating. Cross-reference official documentation for any recent product change notices or lifecycle status updates before finalizing procurement decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing flyback or boost topologies requiring high efficiency and minimal external components. The adjustable output allows flexibility for various voltage rails. Consider the 100 kHz switching frequency for balancing magnetic component size against electromagnetic interference. Ensure adequate thermal management due to the high current capability and power dissipation characteristics inherent to the TO-263 package.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2587 family of SIMPLE SWITCHER regulators, designed for cost-effective and easy-to-use power solutions. The series offers fixed and adjustable output options, catering to diverse industrial and commercial power supply needs. It represents a mature technology line from Texas Instruments, emphasizing reliability and simplified design implementation through integrated protection features.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2587SX-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

What topology configurations does the LM2587S-ADJ support?

The device supports boost, flyback, positive-to-negative, and pre-regulator configurations.

How does the device manage startup conditions?

It incorporates an internal soft-start feature that limits the inrush current during the initial power-up phase.