# LM2678SX-3.3/NOPB (Component) ## Description Buck Switching Regulator IC Positive Fixed 3.3V 1 Output 5A TO-263-8, D²Pak (7 Leads + Tab), TO-263CA #Commonpartslibrary #Integratedcircuit #Powermanagement #Voltageregulator ## Component Details - **Owner:** adrian95 - **Created:** 5/10/2023 - **Last Updated:** 1/9/2024 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ - **Manufacturer Name:** Texas Instruments - **Manufacturer Part Number:** LM2678SX-3.3/NOPB - **Datasheet URL:** https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=http%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Flm2678 - **Part Type:** Integrated Circuit - **Used in:** 15 projects - **Forks:** 1 ## Distributor Pricing (qty 1) *Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.* | Distributor | Unit Price (qty 1) | Stock | |------------|--------------------|-------| | [Arrow](https://www.arrow.com/en/products/lm2678sx-3-3nopb/texas-instruments.html?utm_currency=USD&region=nac) | $4.09 | 4 | | [Digi-Key](https://www.digikey.com/en/products/detail/texas-instruments/LM2678SX-3-3-NOPB/366920) | N/A | N/A | | [LCSC](https://www.lcsc.com/product-detail/C2070980.html) | $6.8421 | 33 | | [Mouser](https://www.mouser.com/en/ProductDetail/Texas-Instruments/LM2678SX-3.3-NOPB?qs=X1J7HmVL2ZHoVOxUkTJlzQ%3D%3D) | $7.35 | 1.7K | | [Verical](https://www.verical.com/pd/national-semiconductor-dc-dc-converter-LM2678SX-3-3-NOPB-55530?utm_currency=USD) | N/A | N/A | - **Part Type:** Integrated Circuits - **Sub-Type:** Logic - **Manufacturer:** Texas Instruments - **MPN:** LM2678SX-3.3/NOPB - **Package / Case Code:** TO-263 - **Pin Count:** 8 - **Logic Function:** AND ## Pins | Pin | Name | Type | |-----|------|------| | 1 | Switch_output | | | 2 | Input | | | 3 | CB | | | 4 | GND | | | 5 | NC | | | 6 | FB | | | 7 | ON/~OFF~ | | | 8 | MNT_PAD | | --- *Generated from [https://www.flux.ai/adrian95/lm2678sx-3p3nopb~oh5](https://www.flux.ai/adrian95/lm2678sx-3p3nopb~oh5)*