LM2676SX-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2676SX-12/NOPB is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments. 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 45A internal switch and features a switching frequency of 260kHz. It utilizes current mode control for rapid transient response and includes thermal shutdown protection. The component is housed in a TO-263 (D2PAK) package, suitable for surface-mount applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-current 45A power switch for efficient step-down conversion
• Utilizes current mode control architecture for fast transient response
• Includes built-in thermal shutdown protection for operational safety

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Distribution bus regulators in industrial equipment
• Power supplies for battery-operated devices requiring wide input ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'SX' corresponds to the TO-263 package variant when sourcing. Confirm 'NOPB' indicates lead-free and RoHS compliance status. Ensure the specific revision matches design requirements as datasheets may undergo updates. Cross-reference the manufacturer part number directly with official TI documentation to avoid counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model for designs requiring a fixed 12V output from a 40V maximum input source. The 260kHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Consider the TO-263 package for its thermal performance in moderate power applications. Verify that the required load current does not exceed the 3A continuous rating under all operating conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2676 family of SIMPLE SWITCHER regulators. The family offers various fixed voltage outputs and adjustable versions. The SX suffix specifically denotes the D2PAK/TO-263 surface-mount package option within this series, distinguishing it from other package types like SOT-223 or TO-220.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include LM2676SX-12/NOPB variants from other manufacturers offering identical pinouts and electrical specifications. Ensure replacement parts maintain the same 260kHz switching frequency and 3A current capability. Verify thermal resistance characteristics match the original design constraints.