LM2674LD-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2674LD-ADJ is a Texas Instruments adjustable step-down switching regulator designed for high-efficiency DC-DC conversion. It operates with an input voltage range of 8 V to 40 V and delivers a maximum output current of 500 mA. The device utilizes a fixed switching frequency of 275 kHz to minimize external component requirements. It features an internal power switch and supports an output voltage adjustment range from 1.23 V to 37 V. The component is housed in an 8-pin SOIC PowerPAD package, suitable for surface-mount applications with thermal performance optimization.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-current power switch eliminates the need for external blocking diodes
• Fixed-frequency PWM control simplifies design and reduces electromagnetic interference
• Built-in thermal shutdown and overcurrent protection ensure operational reliability

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment requiring efficient voltage stepping
• Industrial control modules with wide input voltage ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against the official datasheet to confirm the package type and temperature rating. Ensure the ordering part number matches the required lead time and availability status directly from authorized distributors. Cross-reference the manufacturer's latest documentation to confirm RoHS compliance and any recent design revisions before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an adjustable output voltage is required within a 8 V to 40 V input window. It is appropriate for designs needing up to 500 mA continuous current with minimal external passive components. Consider the SOIC PowerPAD package for improved thermal dissipation compared to standard packages. Evaluate the 275 kHz switching frequency against EMI constraints and inductor size requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2674 series of simple switcher regulators. It shares architectural similarities with other members like the LM2674N but differs in package configuration. The series is characterized by its ease of use and robust protection features, serving as a foundational solution for basic buck converter applications in consumer and industrial electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible replacements include the LM2674MX-ADJ/NOPB for surface-mount needs. For legacy through-hole designs, the LM2674N-ADJ serves as a functional equivalent. Verify that substitute parts maintain the same 500 mA current rating and 40 V maximum input voltage specifications.