LM3676SD-1.8

Voltage Regulators - DC DC Switching Regulators Overview

The LM3676SD-1.8 is a fixed-output step-down DC-DC converter manufactured by Texas Instruments, designed for efficient voltage regulation in portable applications. It provides a stable 1.8V output with a maximum load current of 600mA. The device operates within an input voltage range of 2.9V to 5.5V and utilizes a high switching frequency of 2MHz to minimize external component size. Key electrical specifications include a load regulation of 0.0031%/mA and an operating supply current of 3mA. The integrated synchronous rectification enhances efficiency across various load conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous buck converter architecture for high efficiency
• Fixed 1.8V output voltage optimized for digital logic supplies
• High-frequency operation enabling compact passive component selection

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics power management
• Digital signal processor (DSP) core voltage regulation
• Memory subsystem power delivery

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix configuration when sourcing replacements, as the LM3676SD-1.8/NOPB variant serves as the primary direct substitute. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure that the replacement part matches the original package dimensions and thermal pad requirements to maintain mechanical fit and thermal performance in existing designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring a fixed 1.8V rail with moderate current demands up to 600mA. The 2MHz switching frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Consider the input voltage range limits when designing for battery-powered systems to ensure proper regulation throughout the discharge cycle.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3676 family of step-down converters from Texas Instruments. The family features mode control capabilities to optimize efficiency under light loads. The SD-1.8 designation indicates a fixed 1.8V output version packaged in an 8-WSON format, distinguishing it from adjustable or other voltage variants within the same product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM3676SD-1.8/NOPB is confirmed as a direct substitute. Verify pinout compatibility and thermal characteristics when transitioning between these identifiers.