LM2678SD-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2678SD-ADJ is a SIMPLE SWITCHER high-efficiency 5A step-down voltage regulator manufactured by Texas Instruments. It operates with an input voltage range of 8V to 40V and provides an adjustable output voltage from 1.21V to 37V. The device features a fixed switching frequency of 260kHz and supports a maximum output current of 5A. It utilizes a VSON-14 surface-mount package and functions within a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch enables compact design for high-current applications
• Fixed 260kHz switching frequency reduces external component size
• Adjustable output voltage allows flexible system configuration
• Thermal shutdown and current limit protection ensure operational reliability

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 operating within wide input voltage ranges
• Telecommunications infrastructure power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix designation against official Texas Instruments documentation to confirm pinout compatibility and thermal performance characteristics. Ensure the ordering part number matches the required VSON-14 package variant. Cross-reference datasheet revisions to validate electrical parameters before integration into final designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust 5A buck converter is needed with minimal external passive components. The adjustable output version offers flexibility for varying load requirements compared to fixed-voltage alternatives. Consider the VSON-14 package constraints regarding PCB thermal management and available footprint clearance during layout planning.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2678 family of SIMPLE SWITCHER regulators, designed for high-efficiency DC-DC conversion. The SD suffix indicates the VSON-14 surface-mount package variant, distinguishing it from through-hole or larger DPAK packages found in other family members like the LM2678S series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2678SD-5.0/NOPB: Fixed 5V output alternative in identical VSON-14 package. LM2678SX-ADJ/NOPB: Adjustable version in TO-263 (D2PAK) package; requires thermal pad adaptation.