LM3670MFX-1.875

Voltage Regulators - DC DC Switching Regulators Overview

The LM3670MFX-1.875/NOPB is a miniature step-down DC-DC converter manufactured by Texas Instruments, designed for ultra-low voltage circuits. It operates with an input voltage range from 2.5 V to 5.5 V and provides a fixed output of 1.875 V at up to 0.75 A. The device features a switching frequency of 1 MHz and utilizes SOT-23-5 packaging. It supports automatic PFM/PWM mode switching and includes shutdown functionality.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Miniature step-down DC-DC converter topology
• Automatic PFM/PWM mode switching capability
• Voltage-mode control with pulse width modulation
• Shutdown pin for power management

Voltage Regulators - DC DC Switching Regulators Applications

• Ultra-low voltage circuit power supplies
• Portable electronic devices
• Battery-powered systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix /NOPB indicates RoHS compliance when ordering. Confirm the package type is SOT-23-5 and the output voltage is fixed at 1.875 V. Ensure the operating temperature range meets application requirements, typically -40°C to +85°C. Cross-reference the manufacturer part number with distributor catalogs to ensure correct component identification before purchase.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring a compact buck converter with low quiescent current. It is suitable for designs needing a fixed 1.875 V output from a single-cell lithium battery or similar source. Consider the 1 MHz switching frequency for inductor size trade-offs. Verify that the 0.75 A output current meets the load requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3670 series of switching regulators from Texas Instruments. It is functionally related to other variants like the adjustable LM3670MFX-ADJ/NOPB and higher-current models such as the LM3671 series. The family focuses on miniaturized power solutions for mobile and portable electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3670MFX-1.875/NOPB is a direct replacement for National Semiconductor LM3670MFX-1.875/NOPB. Check datasheets for equivalent parts within the LM367x family if different output voltages or current ratings are needed.