LM3670MF-1.875/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3670MF-1.875/NOPB is a miniature step-down DC-DC converter designed for ultra-low voltage circuits, manufactured by Texas Instruments. It operates with an input voltage range from 2.5 V to 5.5 V and provides a fixed output of 1.875 V. The device supports up to 0.75 A output current and features automatic PFM/PWM mode switching for efficiency optimization. It functions within a temperature range of -40°C to +85°C and utilizes a SOT-23-5 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automatic transition between pulse frequency modulation and pulse width modulation modes to maintain high efficiency across varying load conditions.
• Compact SOT-23-5 surface-mount packaging suitable for space-constrained portable electronic designs.

Voltage Regulators - DC DC Switching Regulators Applications

• Ultra-low voltage circuit power management
• Portable consumer electronics
• Battery-powered devices requiring efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix configuration against the manufacturer's official datasheet to ensure compatibility with required regulatory standards and pinout definitions. Confirm that the ordering code matches the exact fixed output voltage variant intended for the design. Cross-reference the package marking codes to distinguish between different manufacturing lots or revisions. Ensure that the component meets the specified environmental operating temperatures for the target application environment.

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. The device is appropriate for applications prioritizing small footprint over adjustable output flexibility. Consider the maximum output current capability relative to the peak load requirements of the downstream circuitry. Evaluate the thermal performance within the SOT-23-5 package constraints under expected ambient conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3670 series of miniature step-down converters. It shares architectural similarities with other members like the LM3671 but differs in specific electrical parameters such as switching frequency and current limits. The series targets low-voltage applications where size and efficiency are critical. Variants within the family offer different fixed output voltages or adjustable configurations.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3670MFX-1.875/NOPB serves as a direct functional equivalent with identical specifications. Other variants in the LM3670 family may require verification of output voltage and current ratings before substitution.