LM3671MFX-2.8/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3671MFX-2.8/NOPB is a fixed-output synchronous buck DC-DC converter manufactured by Texas Instruments. It provides a regulated 2.8 V output with a maximum load current of 600 mA. The device operates from an input voltage range of 2.7 V to 5.5 V and utilizes a fixed switching frequency of 2.6 MHz. Designed for surface-mount applications, it is housed in a compact SOT-23-5 package. The component supports an operating temperature range from -40°C to +85°C and integrates internal power switches for efficient step-down conversion.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification to maximize conversion efficiency within a minimal footprint.
• Utilizes a fixed high-frequency switching architecture to reduce external passive component requirements.
• Features a robust input voltage range suitable for single-cell lithium-ion battery powered systems.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring efficient battery-powered regulation
• Cellular phones and wireless communication modules
• Personal digital assistants (PDAs) and handheld devices

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix /NOPB confirms lead-free and RoHS compliance status prior to procurement. Confirm the specific output voltage variant matches the design requirement, as the LM3671 series offers multiple fixed voltage options. Ensure the SOT-23-5 package dimensions align with the target PCB layout constraints. Cross-reference the manufacturer datasheet for any recent product change notifications affecting pinout or electrical characteristics.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 2.8 V rail is required from a 2.7 V to 5.5 V source. The 600 mA current capability suits moderate load applications without requiring external passives for stability. Consider the 2.6 MHz frequency for minimizing inductor size compared to lower-frequency alternatives. Verify thermal performance under maximum load conditions given the small SOT-23-5 package size.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3671 family of step-down DC-DC converters. The family shares common topology and control features but differs in fixed output voltage settings. Variants include outputs such as 1.8 V, 2.5 V, and 3.3 V. The MFX suffix indicates the specific tape-and-reel packaging format used for automated assembly processes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3671MFX-2.5/NOPB: Provides 2.5 V output instead of 2.8 V; otherwise identical specifications.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the minimum input voltage required for the LM3671MFX-2.8/NOPB?

The minimum operating input voltage is 2.7 V.

Does the LM3671MFX-2.8/NOPB require external compensation components?

No, the device is internally compensated and does not require external compensation components for stable operation.