LM2673SD-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2673SD-ADJ/NOPB is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments, designed for high-efficiency power conversion. It operates with an input voltage range of 8V to 40V and delivers a continuous output current of 3A. The device features an adjustable output voltage ranging from 1.2V to 37V, controlled via an external resistor network. Integrated into a compact 14-VSON (5x6) surface-mount package, it includes a fixed switching frequency of 260kHz. The component supports a junction temperature range from -40°C to +125°C and incorporates internal thermal shutdown and current limit protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic buck converter topology simplifies design by minimizing external component count
• Built-in thermal shutdown and current limiting protect the device under overload or excessive heat conditions
• Fixed 260kHz switching frequency allows for the use of small inductors and capacitors
• Adjustable output voltage capability provides flexibility for various system requirements

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment requiring efficient step-down conversion
• Industrial control systems operating within wide input voltage ranges
• Telecommunications infrastructure power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'SD' corresponds to the 14-VSON package and 'ADJ' indicates adjustable output when sourcing. Confirm RoHS compliance status as indicated by the NOPB suffix. Ensure the supplier provides genuine Texas Instruments components to guarantee performance specifications match the datasheet. Check for recent production changes or lifecycle notices that may affect long-term availability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 3A output current is required with an input voltage up to 40V. The adjustable output feature suits designs needing non-standard voltage levels between 1.2V and 37V. Consider the 14-VSON package for space-constrained PCB layouts. Evaluate thermal management requirements given the power dissipation at higher load currents and input-output voltage differentials.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2673 SIMPLE SWITCHER family, which offers a complete solution for step-down DC-DC conversion. The family includes fixed voltage options and other package variants like TO-220 and TO-263. The LM2673 series is known for its ease of use, requiring minimal external components compared to traditional regulator solutions. It serves as a robust alternative to linear regulators in applications where efficiency and heat dissipation are critical concerns.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-to-pin replacements within the same package include other LM2673 variants with fixed voltages if the application permits. For adjustable outputs in the same package, verify compatibility with the LM2670SDX-ADJ/NOPB, noting potential differences in quiescent current or specific electrical characteristics. Always consult the latest datasheets to ensure functional equivalence before substitution.