LM2674MX-5.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2674MX-5.0/NOPB is a Texas Instruments SIMPLE SWITCHER step-down voltage regulator in an 8-SO PowerPAD package. It accepts input voltages from 4.5 V to 42 V and provides a fixed 5.0 V output at up to 500 mA. The device operates with a switching frequency of 500 kHz, achieving typical efficiency of 90%. It features a low quiescent current of 3.4 mA and supports operation across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch enables compact buck converter designs
• Fixed 5.0 V output ensures stable regulation without external feedback resistors
• High switching frequency allows for smaller passive components
• Low quiescent current improves efficiency under light load conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment requiring efficient voltage conversion
• Industrial control modules needing wide input voltage tolerance
• Telecommunications infrastructure power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB indicates lead-free composition compliant with RoHS standards. Confirm the MX package designation corresponds to the SO-PowerPAD-8 thermal pad variant. Ensure the -5.0 suffix matches the required fixed output voltage. Check datasheet revisions for any updates to absolute maximum ratings or thermal resistance values before finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required from inputs up to 42 V. The 500 mA current limit suits moderate load applications. Consider the 500 kHz frequency for balancing component size and EMI. Compare against adjustable variants if flexible output is needed. Evaluate thermal performance requirements given the PowerPAD package constraints for heat dissipation in enclosed environments.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2674 family of SIMPLE SWITCHER regulators. It shares topology with the LM2674N through-hole version but offers surface-mount integration. The series targets cost-sensitive applications requiring high efficiency. It complements other TI buck converters like the LM2594 series, offering higher switching frequencies for reduced passive component sizes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2674MX-ADJ/NOPB serves as an adjustable alternative within the same package. LM2594MX-5.0/NOPB is a legacy equivalent with lower switching frequency. Verify pinout compatibility and thermal characteristics when substituting. Ensure input voltage ranges align with system requirements during cross-referencing.