LM2678SDX-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2678SDX-5.0/NOPB is a SIMPLE SWITCHER high-efficiency 5A step-down voltage regulator from Texas Instruments, operating at a fixed switching frequency of 260 kHz. It provides a fixed 5 V output with a maximum input voltage of 40 V and minimum of 8 V. The device features a typical quiescent current of 4.2 mA and operates within a temperature range of -40°C to +125°C. Packaged in a VSON-14 surface-mount case, it utilizes pulse width modulation control for stable regulation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch eliminates the need for external components
• Fixed switching frequency simplifies filter design
• Internal compensation ensures stability without external adjustments

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment requiring efficient step-down conversion
• Industrial control systems with 12V or 24V input rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix /NOPB indicates lead-free and RoHS compliance. Confirm the 'D' package code corresponds to the VSON-14 footprint. Ensure the 'X' designation matches the required reel or cut-tape packaging format for your assembly line. Cross-reference the manufacturer part number against official TI databases to avoid counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from an 8V to 40V input source. It is suitable for designs needing up to 5A continuous load current with minimal external passive components. Consider thermal management requirements due to the VSON-14 package size and power dissipation characteristics under heavy loads.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2678 family of SIMPLE SWITCHER regulators. It shares core architecture with variants like LM2678S-5.0 and LM2678T-5.0 but differs in package type. The SD variant specifically denotes the VSON-14 surface-mount package, distinguishing it from the TO-263 (S) or TO-220 (T) options.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2678SD-5.0/NOPB is the direct equivalent without the reel designation. LM2678SX-5.0/NOPB may refer to the same device depending on distributor nomenclature. Verify pinout compatibility before substituting with other buck converters.