LM2672MX-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2672MX-3.3/NOPB is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments, designed for high-efficiency power conversion in surface-mount applications. It operates with an input voltage range of 6.5V to 40V and provides a fixed output of 3.3V at up to 1A load current. The device integrates a 0.48Ω N-channel MOSFET switch and operates at a switching frequency of 260kHz. It features thermal shutdown and current limit protection, functioning reliably within a junction temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a low-on-resistance N-channel MOSFET switch to minimize conduction losses and reduce external component count.
• Includes comprehensive protection mechanisms such as thermal shutdown and cycle-by-cycle current limiting for robust operation under fault conditions.
• Utilizes a fixed 260kHz switching frequency to allow the use of small inductors and capacitors while maintaining stable regulation.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems requiring 3.3V supply rails
• Battery-powered equipment utilizing buck topology for efficiency
• Industrial control systems operating within wide input voltage ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'NOPB' confirms lead-free and RoHS compliance status. Confirm the package marking matches the SOIC-8 specification. Ensure the fixed 3.3V output variant is selected rather than the adjustable version. Check for moisture sensitivity level requirements during storage and handling procedures.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required from an input voltage between 6.5V and 40V. It is suitable for designs needing 1A continuous current with minimal external passive components. Consider the SOIC-8 package for standard surface-mount assembly processes and verify thermal performance under maximum load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2672 SIMPLE SWITCHER family, which offers a complete solution for step-down conversion. The series includes adjustable and fixed voltage variants. The LM2672MX-3.3/NOPB specifically provides a fixed output, simplifying design compared to the adjustable LM2672MX-ADJ/NOPB while maintaining similar protection features and switching characteristics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2672M-3.3/NOPB (Tube packaging equivalent)

Voltage Regulators - DC DC Switching Regulators FAQ

What is the minimum input voltage required for the LM2672MX-3.3/NOPB?

The minimum input voltage is 6.5V.

Does the LM2672MX-3.3/NOPB include internal feedback resistors?

Yes, the fixed 3.3V output version integrates the feedback network internally, eliminating the need for external resistors.