LM3674MFX-2.8

Voltage Regulators - DC DC Switching Regulators Overview

The LM3674MFX-2.8/NOPB is a fixed-output step-down DC-DC converter manufactured by Texas Instruments, featuring a 2.8 V output voltage and a 600 mA maximum output current. It operates with an input voltage range of 2.7 V to 5.5 V and utilizes a buck topology. The device integrates a 2 MHz switching frequency and functions within an operating temperature range of -30°C to +85°C. Packaged in a compact SOT-23-5 surface-mount format, it serves as a power management IC designed for efficient voltage regulation in portable applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-frequency 2 MHz switching regulator to minimize external component size
• Provides a fixed 2.8 V output for direct powering of low-voltage digital loads
• Supports up to 600 mA continuous load current capability
• Operates efficiently across a wide 2.7 V to 5.5 V input voltage range

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring stable 2.8 V logic supply
• Battery-powered systems utilizing single-cell lithium-ion or LiPo sources
• Embedded microcontroller unit (MCU) power rails
• Low-power sensor interface circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number includes the /NOPB suffix to confirm lead-free compliance and RoHS adherence. Confirm the 'X' suffix indicates tape-and-reel packaging suitable for automated assembly processes. Ensure the specific 2.8 V fixed output variant matches the target circuit design requirements before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 2.8 V rail is required from a single-cell battery source. The 2 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the 600 mA current limit meets the peak demand of the downstream load. Consider the SOT-23-5 package constraints regarding thermal dissipation under heavy continuous loads.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM3674 family of monolithic step-down converters. It shares core architecture with variants offering different fixed output voltages, such as 1.2 V or 1.5 V models. The family is characterized by its small footprint and integration of the power switch, distinguishing it from discrete solutions requiring external MOSFETs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3674MF-2.8/NOPB is the non-reel equivalent of this part number.