LM3674MF-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM3674MF-ADJ is a step-down DC-DC converter manufactured by Texas Instruments, originally developed under the National Semiconductor brand. It operates from an input voltage range of 2.7 V to 5.5 V and provides up to 600 mA load current. The device utilizes internal synchronous rectification for high efficiency and features a fixed switching frequency of 2 MHz (typical). It is housed in a 5-pin SOT-23 package. The adjustable output version allows flexibility in power rail design for portable systems.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Internal synchronous rectification ensures high conversion efficiency during PWM mode operation.
• High switching frequency of 2 MHz enables the use of minimal external surface-mount components.
• Adjustable output voltage configuration provides design flexibility for various low-voltage circuits.

Voltage Regulators - DC DC Switching Regulators Applications

• Mobile phones
• Portable systems
• Low-voltage circuit powering

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm datasheet revisions and lead times prior to integration. Ensure supply chain stability as this part may be subject to lifecycle changes. Validate packaging specifications against assembly requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing portable electronics requiring efficient power management from single-cell lithium-ion batteries. The adjustable output variant suits applications needing specific voltage rails not covered by fixed versions. Consider the 2 MHz frequency for minimizing passive component size while maintaining regulation performance.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM3674 series of step-down converters optimized for mobile applications. It shares core topology with fixed-output variants like the LM3674MF-1.2/NOPB but offers programmable output settings. The series is characterized by low shutdown current and compact SOT-23-5 packaging suitable for space-constrained designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3674MF-1.2/NOPB: Fixed 1.2V output; verify if voltage requirement matches. LM3674MFX-1.2/NOPB: Tape & reel packaging alternative. LM3674MF-2.8/NOPB: Fixed 2.8V output; check compatibility. Cross-reference with LM3674 family members for pin-compatible substitutes.