LM3674MFX-1.2

Voltage Regulators - DC DC Switching Regulators Overview

The LM3674MFX-1.2 is a synchronous step-down DC-DC converter manufactured by Texas Instruments, housed in a SOT-23-5 package. It operates with an input voltage range of 2.7 V to 5.5 V and provides a fixed output voltage of 1.2 V at up to 600 mA load current. The device features a typical switching frequency of 2 MHz, enabling the use of small external components. It supports operation temperatures from -30°C to +85°C and includes internal synchronous rectification for high efficiency.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Internal synchronous rectification ensures high efficiency during PWM mode operation.
• High switching frequency allows for the use of minimal external surface-mount components.
• Shutdown mode significantly reduces battery consumption for portable applications.

Voltage Regulators - DC DC Switching Regulators Applications

• Mobile phones
• Portable systems
• Low-voltage circuits powered by single Li-Ion cell batteries

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as indicated in official documentation. Check for obsolete status or lifecycle changes before finalizing procurement plans. Ensure packaging specifications match design requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing compact power solutions requiring fixed 1.2 V output from 3.7 V nominal sources. Consider the SOT-23-5 footprint constraints and thermal performance limits within the specified operating temperature range. Evaluate compatibility with required inductor and capacitor values for stable 2 MHz operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3674 series of step-down converters optimized for mobile devices. It shares architectural similarities with other variants in the family but differs in fixed output voltage configuration. The suffix indicates specific tape and reel packaging options available from the manufacturer.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3674MF-1.2/NOPB serves as a verified equivalent variant within the same product line. Cross-reference pinouts and electrical characteristics to ensure functional compatibility in existing designs without circuit modifications.