LM3671MFX-2.5/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3671MFX-2.5/NOPB is a fixed-output step-down DC-DC converter manufactured by Texas Instruments. It operates with an input voltage range of 2.7 V to 5.5 V and provides a fixed output voltage of 2.5 V. The device supports a maximum output current of 600 mA and utilizes a buck topology. It features a switching frequency of 2.6 MHz, enabling the use of compact external components. The unit is housed in a SOT-23-5 package and functions within a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification for high efficiency across load ranges
• Automatically switches between PWM and PFM modes to optimize light-load performance
• Includes internal protection mechanisms such as overcurrent limiting and thermal shutdown

Voltage Regulators - DC DC Switching Regulators Applications

• Powering low-voltage digital circuits from single-cell lithium-ion batteries
• Portable consumer electronics requiring compact power solutions
• Battery-operated devices needing extended standby life through low quiescent current

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix '2.5' confirms the fixed 2.5 V output voltage configuration. Ensure the 'NOPB' designation indicates lead-free and RoHS compliance status. Confirm the 'MFX' suffix corresponds to the SOT-23-5 package variant. Cross-reference the manufacturer part number against official datasheets to validate electrical specifications before integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 2.5 V rail is required from a 2.7 V to 5.5 V source. It is suitable for space-constrained designs due to the small SOT-23-5 footprint. Consider the 2.6 MHz switching frequency for minimizing passive component size. Evaluate the 600 mA current limit against peak load requirements to ensure adequate headroom.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM3671 series of step-down converters designed for portable applications. It shares the core architecture with other variants in the family, differing primarily in output voltage settings and packaging options. The series targets battery-powered systems where efficiency and board space are critical constraints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

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