LM3671MFX-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3671MFX-ADJ/NOPB is a step-down DC-DC converter manufactured by Texas Instruments, featuring an adjustable output voltage range from 1.1 V to 3.3 V and a maximum output current of 600 mA. It operates with an input voltage range of 2.7 V to 5.5 V and utilizes a buck topology. The device supports a switching frequency up to 2.6 MHz and employs SOT-23-5 surface-mount packaging. It functions within a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automatically switches between PWM low-noise mode and PFM low-current mode to optimize system efficiency and extend battery life.
• Integrates internal synchronous rectification for high energy conversion during PWM operation.
• Includes built-in protection mechanisms such as overcurrent limiting and thermal shutdown.
• Requires only three external surface-mount components: one inductor and two ceramic capacitors.

Voltage Regulators - DC DC Switching Regulators Applications

• Mobile phones
• Portable hard drives
• Personal digital assistants (PDAs)
• MP3 players
• Digital cameras

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm the adjustable output variant. Ensure the package type matches the required SOT-23-5 footprint. Confirm RoHS compliance status through the manufacturer's datasheet. Check for automotive qualification requirements if applicable to the target application environment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing power systems for portable electronics requiring efficient single-cell lithium-ion battery management. It is suitable for applications needing compact layouts due to the small number of external passive components. Consider the automatic mode switching feature for designs prioritizing extended standby times and low quiescent current consumption.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3671 family of step-down DC-DC converters designed for portable devices. It provides regulated power from a single lithium-ion cell source. The series offers both fixed and adjustable output options to support various low-voltage circuit requirements in consumer electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3671MF-ADJ/NOPB is listed as a parameter-equivalent alternative. Verify pinout compatibility and electrical specifications before substitution.