LM3671QMFX-1.2/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3671QMFX-1.2/NOPB is a fixed-output synchronous buck DC-DC converter manufactured by Texas Instruments. It provides a fixed 1.2V output with a maximum load current of 600mA. The device operates from an input voltage range of 2.7V to 5.5V and utilizes a 2MHz switching frequency. It features low quiescent current of 16µA and supports operation temperatures from -40°C to +85°C. The component is housed in a compact SOT-23-5 package and holds AEC-Q100 automotive qualification.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade reliability certified under the AEC-Q100 standard for robust performance in vehicle environments.
• Integrated synchronous rectification architecture ensures high conversion efficiency across varying load conditions.
• Fixed internal feedback network eliminates external resistor requirements, simplifying circuit design and reducing component count.

Voltage Regulators - DC DC Switching Regulators Applications

• Power supply stages for automotive infotainment systems
• Voltage regulation for telematics control units
• Power distribution for dashboard display modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the ordering suffix matches 'MFX' for tape-and-reel packaging and 'Q' for automotive grade. Confirm the '-1.2' designation indicates the fixed 1.2V output variant. Ensure the NOPB suffix confirms lead-free and RoHS compliance status before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing for automotive applications requiring AEC-Q100 certification. It is suitable for space-constrained designs due to the small SOT-23-5 footprint. Choose this part over non-automotive variants if long-term reliability and temperature stability are critical for the target system environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3671 family of step-down converters. It shares core electrical specifications with commercial variants like the LM3671MF-1.2/NOPB but differs in manufacturing quality standards and testing protocols to meet automotive industry requirements. The Q prefix specifically denotes its qualification for harsh automotive operating conditions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3671MF-1.2/NOPB (Commercial grade equivalent)

Voltage Regulators - DC DC Switching Regulators FAQ

What does the 'Q' prefix indicate in the part number?

The 'Q' prefix signifies that the device is qualified to the AEC-Q100 automotive standard, ensuring suitability for demanding vehicle environments.

Is the output voltage adjustable?

No, the '-1.2' suffix indicates that the output voltage is factory-fixed at 1.2V and cannot be adjusted via external resistors.