# NB638 (Component) ## Description Wide Vin 4.5-28V 7A COT Synchronous Step-Down Converter with Internal Bias Supply Ultra-Sonic Mode at Light Load #ultralibrarian ## Component Details - **Owner:** monolithicpower - **Created:** 2/26/2024 - **Last Updated:** 2/29/2024 - **Visibility:** Public - **Datasheet URL:** https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/NB638 - **Package or Case Code:** QFN-20_NB638_MNP - **Product Image Url:** https://www.monolithicpower.com/pub/media/catalog/product/N/B/NB638_969_1.jpg - **Manufacturer Part Number:** NB638 - **Product Info Url:** https://www.monolithicpower.com/en/catalog/product/view/id/969?utm_source=ultralibrarian&utm_medium=component_search&utm_campaign=listing - **Manufacturer Name:** Monolithic Power Systems - **MPN:** NB638 - **Package / Case Code:** 20-QFN - **Pin Count:** 25 ## Pins | Pin | Name | Type | |-----|------|------| | 1 | AGND | | | 2 | FREQ | | | 3 | FB | | | 4 | SS | | | 5 | EN | | | 6 | PGOOD | | | 7 | BST | | | 8 | IN | | | 9 | SW | | | 10 | SW | | | 11 | PGND | | | 12 | PGND | | | 13 | PGND | | | 14 | PGND | | | 15 | PGND | | | 16 | PGND | | | 17 | SW | | | 18 | SW | | | 19 | IN | | | 20 | VCC | | | 21 | IN | | | 22 | IN | | | 23 | IN | | | 24 | SW | | | 25 | SW | | --- *Generated from [https://www.flux.ai/monolithicpower/nb638](https://www.flux.ai/monolithicpower/nb638)*