LM2676SDX-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2676SDX-12 is a fixed-output step-down switching regulator from the SIMPLE SWITCHER family, manufactured by Texas Instruments. It provides a fixed 12V output with a maximum load current of 3A. The device operates within an input voltage range of 8V to 40V and utilizes a 260kHz switching frequency. It employs pulse-width modulation control in a non-synchronous buck topology. The component is housed in a 14-VSON package (5x6mm) with an exposed pad for thermal management. It supports junction temperatures from -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side switch eliminates the need for external boost diodes
• Fixed 12V output option simplifies design and reduces component count
• Internal frequency compensation ensures stability with small external components
• Thermal shutdown protection safeguards against overheating

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment requiring efficient voltage conversion
• Industrial control systems operating on 24V or 48V buses
• Telecommunications infrastructure power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix and tape-and-reel quantity against the manufacturer's official datasheet, as packaging variations exist. Confirm RoHS compliance status, noting that some legacy listings may indicate non-compliance while newer NOPB variants are compliant. Ensure the 14-VSON package dimensions match your PCB footprint requirements before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 12V output is required at up to 3A from an 8V to 40V input source. It is suitable for designs prioritizing low external component count over maximum efficiency compared to synchronous alternatives. Consider the TO-263 or TO-220 packages if higher thermal dissipation capabilities are needed for the same electrical specifications.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2676 series of SIMPLE SWITCHER regulators, which are designed for ease of use and low external component counts. The SD variant specifically denotes the 14-VSON package, offering a compact solution for space-constrained applications compared to the larger D2PAK or TO-220 versions available in the same family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2676SDX-12/NOPB is the direct lead-free and RoHS-compliant replacement for the standard LM2676SDX-12. Both parts share identical pinouts and electrical characteristics, allowing for drop-in substitution in existing designs.