LM2676S-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2676S-12 is a SIMPLE SWITCHER step-down voltage regulator from Texas Instruments, designed for high-efficiency DC/DC conversion. It operates with an input voltage range of 8V to 40V and provides a fixed 12V output at up to 3A. The device integrates a 1.5A switch and features a switching frequency of 260kHz. It utilizes a TO-263-7 (DDPAK-7) surface-mount package and supports junction temperatures from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated 1.5A power switch for efficient buck topology operation
• Fixed 12V output configuration simplifies design requirements
• High switching frequency enables use of small external components
• Robust thermal performance in TO-263 package for heat dissipation

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for digital logic circuits
• Power supply stages for embedded microprocessors
• Battery-powered systems requiring stable 12V rails
• Industrial control board voltage conditioning

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'S' corresponds to the TO-263-7 package variant rather than other pinouts like D2PAK or TO-220. Confirm RoHS compliance status as historical data indicates potential non-compliance for this specific part number. Check current availability status since some listings indicate discontinued status. Ensure the fixed 12V output matches system requirements compared to adjustable variants.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required within an 8V to 40V input range. The 3A continuous current capability suits moderate load applications. Consider the 260kHz frequency for balancing efficiency and passive component size. Evaluate thermal management needs due to the integrated switch, ensuring adequate PCB copper area for the TO-263 package to maintain reliability under full load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

Part of the LM267x SIMPLE SWITCHER family, which includes adjustable and multiple fixed voltage options. The 'S' suffix typically denotes the TO-263-7 surface mount package. This series is known for reducing external component count and simplifying design through integrated feedback networks and protection features common to the broader LM2676 product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2676SX-12/NOPB: Active replacement with identical electrical specifications but potentially different packaging or compliance status. LM2676SDX-12/NOPB: Alternative package variant offering similar performance. Verify pinout compatibility and thermal characteristics before substitution.