LM3671MF-2.5/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3671MF-2.5/NOPB is a synchronous step-down DC-DC converter manufactured by Texas Instruments, designed for space-constrained applications. 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 delivers a maximum output current of 600 mA and features a switching frequency of 2.6 MHz. It incorporates a shutdown function and exhibits a typical operating supply current of 5 mA. The component is housed in a compact SOT-23-5 package and supports surface-mount installation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology enables high conversion efficiency within a minimal footprint.
• Integrated power switches support continuous output currents up to 600 mA.
• Fixed 2.6 MHz switching frequency allows the use of small external passive components.
• Shutdown mode capability reduces quiescent current for extended battery life.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable handheld devices requiring efficient power management
• Battery-powered consumer electronics systems
• Embedded applications with strict size limitations

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific suffix matches the required output voltage configuration, as the LM3671 series includes multiple variants with different fixed outputs. Confirm the package designation corresponds to the SOT-23-5 form factor. Ensure compliance with RoHS standards if environmental regulations apply to the target assembly. Cross-reference the datasheet revision to confirm thermal and electrical characteristics align with design requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 2.5 V rail is required from a single-cell lithium-ion or similar power source. The 2.6 MHz frequency is suitable for designs prioritizing board area reduction over extreme low-noise performance. Consider the 600 mA current limit against peak load demands. Evaluate thermal dissipation capabilities based on the expected ambient temperature and PCB copper area available for heat spreading.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3671 family of synchronous step-down converters. The family offers various fixed output voltage options to accommodate different logic levels. All members share the same core architecture, switching frequency, and physical package dimensions, ensuring consistent mechanical integration across product lines while providing flexibility in voltage selection.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3671MF-1.8/NOPB: Provides 1.8 V output instead of 2.5 V; identical package and electrical characteristics otherwise.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the fixed output voltage of the LM3671MF-2.5/NOPB?

The device provides a fixed output voltage of 2.5 V.

Does the LM3671MF-2.5/NOPB support external feedback adjustment?

No, this specific variant has a fixed internal feedback network set to 2.5 V.