LM3674MFX-ADJ/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3674MFX-ADJ/NOPB is a step-down DC-DC converter from Texas Instruments, optimized for low-voltage circuits powered by single Li-Ion cells or input rails ranging from 2.7 V to 5.5 V. It delivers up to 600 mA of load current across the entire input voltage range. The device operates at a typical fixed switching frequency of 2 MHz in Pulse Width Modulation (PWM) mode, utilizing internal synchronous rectification for high efficiency. It features an adjustable output voltage configuration and is housed in a compact 5-pin SOT-23 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Internal synchronous rectification ensures high efficiency during PWM mode operation.
• High switching frequency allows the use of minimal external surface-mount components.
• Ultra-low shutdown current significantly reduces battery consumption in portable systems.

Voltage Regulators - DC DC Switching Regulators Applications

• Mobile phones
• Portable systems
• Low-voltage circuit power supplies

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 ordering part number matches the required package style and RoHS compliance status. Cross-reference the manufacturer's latest datasheet for any design changes or obsolescence notices before finalizing procurement decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing portable electronics requiring efficient power conversion from a single-cell lithium-ion source. The adjustable output feature provides flexibility for various logic levels. Consider the 2 MHz switching frequency for minimizing passive component size while maintaining stable regulation under varying load conditions within the specified temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM3674 series of miniature step-down converters. It shares the same core topology and performance characteristics as other variants in the family, such as fixed-output versions, but offers configurable voltage settings. The series is designed specifically for space-constrained applications where high efficiency and small footprint are critical requirements.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pin compatibility and electrical specifications with equivalent models from the same manufacturer or qualified second sources before implementation.