LM3674MF-1.875

Voltage Regulators - DC DC Switching Regulators Overview

The LM3674MF-1.875/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 and features a fixed output voltage of 1.875 V. The device operates at a typical switching frequency of 2 MHz using internal synchronous rectification for high efficiency in PWM mode. It is housed in a compact SOT-23-5 package and supports an operating temperature range from -30°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Internal synchronous rectification ensures high efficiency during Pulse Width Modulation (PWM) mode operation.
• High switching frequency allows the use of minimal external components, specifically one inductor and two ceramic capacitors.
• Shutdown mode significantly reduces battery consumption with a typical current draw of 0.01 µA.

Voltage Regulators - DC DC Switching Regulators Applications

• Mobile phones
• Portable systems
• Low-voltage circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official documentation to confirm lead-free status and exact output voltage configuration. Ensure the ordering part number matches the required package type and thermal rating. Cross-reference manufacturer datasheets for any recent product change notifications or lifecycle status updates before finalizing procurement decisions.

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 fixed 1.875 V output eliminates the need for external feedback resistors, simplifying the design. Consider the 2 MHz frequency for minimizing passive component size while maintaining adequate load regulation for sensitive digital loads.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM3674 series of step-down converters optimized for mobile and portable applications. It shares architectural similarities with other members like the LM3671 but offers specific fixed voltage options tailored for standard logic levels. The series emphasizes miniaturization through high-frequency operation and integrated protection features.

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?

The typical shutdown current is 0.01 µA, which helps minimize battery drain in portable devices.

Does the LM3674MF-1.875 require external feedback resistors?

No, as it is a fixed-output version providing 1.875 V, it does not require external feedback resistors for voltage setting.