LM3670MF-1.875

Voltage Regulators - DC DC Switching Regulators Overview

The LM3670MF-1.875 is a fixed-output step-down DC-DC converter manufactured by Texas Instruments, designed for ultra-low voltage applications. It operates within an input voltage range of 2.5 V to 5.5 V and provides a fixed output voltage of 1.875 V with a maximum output current of 750 mA. The device utilizes pulse width modulation control and features automatic PFM/PWM mode switching to optimize efficiency across varying load conditions. It is housed in a compact SOT-23 package with five terminals and supports surface mount installation. The component functions reliably within an operating temperature range of -40 °C to +85 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automatic transition between Pulse Frequency Modulation (PFM) and Pulse Width Modulation (PWM) modes to maintain high efficiency under light and heavy loads.
• Compact SOT-23-5 package design suitable for space-constrained portable electronics.
• Integrated synchronous rectification for improved power conversion efficiency.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring efficient power management
• Battery-powered devices operating at ultra-low voltages
• Mobile communication equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix and tape/reel specifications against the manufacturer's latest datasheet before ordering. Confirm that the RoHS compliance status matches project requirements, as documentation indicates potential variations in lead content declarations across different production batches or legacy versions. Ensure the supplier provides valid traceability documents for quality assurance purposes.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.875 V output is required from a single-cell lithium-ion or similar battery source. It is appropriate for designs prioritizing small footprint over adjustable output flexibility. Compare against the LM3671 series if higher output current capability or different switching frequencies are necessary for the specific application constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3670 family of miniature step-down converters developed by Texas Instruments. It shares architectural similarities with the LM3671 and LM3674 series but is distinguished by its specific fixed output voltage and 750 mA current rating. The family targets low-power portable markets where size and efficiency are critical design parameters.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM3670MFX-1.875/NOPB serves as a verified alternative variant within the same product line. Cross-reference pinouts and thermal characteristics when substituting with other LM367x series components to ensure compatibility with existing PCB layouts.