LM3670MF-1.8/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3670MF-1.8/NOPB is a fixed-output step-down DC-DC converter manufactured by Texas Instruments. It provides a regulated 1.8 V output with a maximum current capability of 350 mA. The device operates from an input voltage range of 2.5 V to 5.5 V and utilizes a 1 MHz switching frequency. It is housed in a compact SOT-23-5 surface-mount package. The component supports automatic transition between Pulse Frequency Modulation (PFM) and Pulse Width Modulation (PWM) modes to optimize efficiency across varying load conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates automatic PFM/PWM mode switching for enhanced light-load efficiency
• Utilizes a compact SOT-23-5 package for space-constrained designs
• Supports input voltages ranging from 2.5 V to 5.5 V

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered devices
• Ultra-low voltage circuit power supplies
• Miniature DC-DC conversion systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as per the manufacturer's datasheet. Ensure the ordering part number matches the fixed 1.8 V output variant, distinct from adjustable or other voltage versions within the LM3670 family. Confirm the SOT-23-5 package designation aligns with PCB footprint requirements before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.8 V rail is required with moderate current demands up to 350 mA. It is suitable for applications prioritizing low quiescent current and small form factor over higher power throughput. Consider alternative models like the LM3674 if higher output current or different fixed voltage levels are necessary for the specific system design.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM3670 series of miniature step-down converters designed for ultra-low voltage circuits. It shares architectural similarities with the LM3671 and LM3674 families but is distinguished by its lower 350 mA output current rating and 1 MHz switching frequency. The series targets portable electronics requiring efficient power management in minimal physical spaces.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum output current for the LM3670MF-1.8/NOPB?

The maximum output current is 350 mA.

Does the LM3670 support automatic mode switching?

Yes, it features automatic PFM/PWM mode switching to maintain high efficiency at light loads.