LM3674MFX-1.875

Voltage Regulators - DC DC Switching Regulators Overview

The LM3674MFX-1.875 is a fixed-output step-down DC-DC converter manufactured by Texas Instruments, belonging to the LM3674 series. It provides a fixed output voltage of 1.875 V with a maximum output current capability 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 MHz. Designed for surface-mount applications, it is housed in a compact SOT-23-5 package. The component supports operation within a junction temperature range of -30°C to +85°C and features synchronous rectification for improved efficiency.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous buck topology for high conversion efficiency
• Utilizes fixed 2 MHz switching frequency to minimize external passive component size
• Includes integrated power switch and control circuitry in a small footprint

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered electronic devices
• Embedded systems requiring stable low-voltage regulation
• General-purpose point-of-load power management

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm the fixed output voltage rating. Ensure the ordering part number matches the required electrical specifications and package type. Confirm RoHS compliance status through the manufacturer's latest product data sheet before finalizing procurement decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.875 V rail is required from a single-cell lithium-ion or similar battery source. The 2 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the load current does not exceed the 600 mA limit and that the input voltage remains within the specified 2.7 V to 5.5 V window for proper regulation.

Voltage Regulators - DC DC Switching Regulators Part Context

This device is part of the LM3674 family of step-down converters designed for space-constrained portable applications. It shares architectural similarities with other members of the series but differs in its fixed output voltage configuration. The LM3674 series targets applications needing efficient power conversion in minimal board area.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3674MFX-1.8/NOPB: Fixed 1.8 V output variant. LM3674MFX-1.2/NOPB: Fixed 1.2 V output variant. LM3674MF-1.5EV: Evaluation board for the series.