LM2674MX-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2674MX-12 is a monolithic DC-DC switching regulator manufactured by Texas Instruments, designed for high-efficiency step-down voltage conversion. It operates with a fixed internal oscillator frequency of 260 kHz and delivers a maximum output current of 500 mA. The device provides a fixed regulated output voltage of 12 V and accepts an input supply ranging from 6.5 V to 40 V. Packaged in an 8-pin SOIC (SOT-363) surface-mount format, it integrates a power switch and control circuitry to minimize external component count.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-efficiency power switch and fixed-frequency PWM controller within a single package
• Provides inherent thermal shutdown and overcurrent protection for robust operation under fault conditions
• Features an enable pin with hysteresis to facilitate low-power standby modes and TTL-compatible shutdown

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems requiring 12 V rails
• Battery-powered equipment utilizing wide-input-range buck conversion
• Industrial control modules needing isolated or non-isolated DC-DC isolation stages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix MX against the manufacturer's official datasheet to confirm the package type and temperature range. Ensure that the fixed 12 V output variant matches the system requirements, as adjustable versions exist within the same family. Cross-reference the ordering information with authorized distributors to confirm availability and authenticity.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12 V output is required with an input voltage up to 40 V. Consider the 260 kHz switching frequency for balancing component size and efficiency. Evaluate the thermal performance in the SOIC-8 package relative to the expected load current and ambient temperature constraints.

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 LM2672 and LM2675 but differs in output voltage options and current capabilities. The series is characterized by its simplicity, requiring minimal external passive components for stable operation.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.