LM3671MFX-1.2/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3671MFX-1.2/NOPB is a fixed-output synchronous buck DC-DC converter from Texas Instruments, delivering a regulated 1.2V output at up to 600mA. It operates within an input voltage range of 2.7V to 5.5V and utilizes a 2MHz switching frequency for compact passive design. The device features a low quiescent current of 16µA and supports shutdown modes. Packaged in a space-saving SOT-23-5 (SC-74A) footprint, it functions reliably across an industrial temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification for high efficiency in a minimal footprint
• Supports automatic transition between PFM and PWM modes for optimized light-load performance
• Includes integrated soft-start to limit inrush current during power-up

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered consumer electronics
• Embedded systems requiring stable low-voltage rails
• Industrial control modules with limited board space

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'MFX' confirms the tape-and-reel packaging format required for automated assembly processes. Ensure the 'NOPB' designation indicates lead-free and RoHS compliance status matches project environmental regulations. Confirm the fixed 1.2V output variant aligns with target load requirements before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.2V rail is required with moderate current demands up to 600mA. The SOT-23-5 package suits designs with strict spatial constraints. Consider the 2MHz frequency for smaller external inductors compared to lower-frequency alternatives. Verify that the 2.7V minimum input voltage meets the lowest expected supply rail conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3671 family of step-down converters designed for portable applications. It shares architectural similarities with the LM3670 but offers enhanced integration. The LM3671 series provides a balance of efficiency and size, targeting single-cell lithium-ion or battery-powered devices needing efficient voltage regulation.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM3671MF-1.2/NOPB serves as the non-tape-and-reel alternative with identical electrical characteristics. Cross-reference the LM3670 series for similar functionality, noting potential differences in input voltage ranges and thermal performance specifications.