LM3674MF-2.8/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3674MF-2.8/NOPB is a step-down DC-DC converter manufactured by Texas Instruments, designed for low-voltage applications powered by single Li-Ion cell batteries 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. The device operates at a typical fixed switching frequency of 2 MHz in Pulse Width Modulation (PWM) mode, utilizing internal synchronous rectification for high efficiency. It features a 0.01 µA typical shutdown current and includes internal soft start, current overload protection, and thermal shutdown protection. The component is housed in a compact SOT-23-5 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Internal synchronous rectification ensures high efficiency during PWM mode operation.
• High switching frequency allows the use of minimal external surface-mount components.
• Integrated protection mechanisms include current overload and thermal shutdown safeguards.

Voltage Regulators - DC DC Switching Regulators Applications

• Mobile phones
• Portable systems
• Low-voltage circuits powered by single Li-Ion cells

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free compliance as indicated in official documentation. Confirm the fixed output voltage setting matches the design requirement of 2.8 V. Ensure the SOT-23-5 package footprint aligns with the PCB layout specifications. Cross-reference the manufacturer's latest datasheet for any updates on operating temperature ranges or electrical characteristics prior to finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing portable electronics requiring efficient power conversion from a single lithium-ion source. The 2 MHz switching frequency facilitates the use of small inductors and capacitors, reducing overall board space. Consider the 600 mA current limit relative to the target load requirements. The fixed 2.8 V output eliminates the need for external feedback resistors, simplifying the circuit design compared to adjustable versions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3674 series of step-down DC-DC converters. The series offers various fixed output voltage options and adjustable versions to suit different low-voltage circuit needs. The LM3674 family is optimized for mobile and portable applications, providing a balance of performance, size, and efficiency through its integrated synchronous rectifier and high-frequency operation capabilities.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3674MF-2.8

Voltage Regulators - DC DC Switching Regulators FAQ

What is the typical shutdown current for the LM3674MF-2.8/NOPB?

The typical shutdown current is 0.01 µA.

Does the LM3674MF-2.8/NOPB support adjustable output voltage?

No, the LM3674MF-2.8/NOPB provides a fixed output voltage of 2.8 V.