LM3674MF-1.875/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3674MF-1.875/NOPB is a fixed-output step-down DC-DC converter manufactured by Texas Instruments, designed for low-voltage applications powered by single Li-Ion cells or input rails ranging from 2.7 V to 5.5 V. It delivers up to 600 mA of load current across the entire input voltage range and features a typical switching frequency of 2 MHz. The device utilizes internal synchronous rectification for high efficiency in PWM mode and offers a shutdown current as low as 0.01 µA. Packaged in an SOT-23-5 format, it supports operation temperatures from -30°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Internal synchronous rectification ensures high conversion efficiency during Pulse Width Modulation (PWM) mode operation.
• Integrated soft start function limits inrush current during startup sequences.
• Comprehensive protection mechanisms include current overload protection and thermal shutdown capabilities.

Voltage Regulators - DC DC Switching Regulators Applications

• Mobile phones
• Portable systems
• Low-voltage circuit powering

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific suffix 'NOPB' confirms lead-free compliance and RoHS adherence before procurement. Confirm the fixed output voltage matches the target design requirement, as this variant provides a non-adjustable 1.875 V output. Ensure the SOT-23-5 package footprint aligns with the PCB layout specifications. Cross-reference the manufacturer's latest datasheet for any potential product change notifications or pinout updates.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for battery-powered devices needing a stable 1.875 V rail. The 2 MHz switching frequency allows for the use of small external inductors and capacitors, minimizing board space. Consider the 600 mA current limit against peak load demands. This part is suitable for designs prioritizing efficiency and low quiescent current in portable electronics.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM3674 family of step-down converters optimized for mobile and portable applications. It shares core architectural features with other variants in the series, such as the LM3674MFX-1.8/NOPB, differing primarily in the fixed output voltage setting and specific packaging options. The family is characterized by its ability to operate efficiently from single-cell lithium-ion batteries.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3674MFX-1.8/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

What is the typical shutdown current for the LM3674MF-1.875/NOPB?

The typical shutdown current is 0.01 µA.

Does the LM3674MF-1.875/NOPB support adjustable output voltages?

No, this specific part number provides a fixed output voltage of 1.875 V.