# LT3991 Reference Design ## Description This is a reference design of buck converter based on LT3991 with output 3.3V #dcdc #power #ad #3V3 #referenceDesign #powermanagement #analogdevices #template #reference-design ## Project Details - **Owner:** vasyl - **Created:** 6/3/2023 - **Last Updated:** 2/8/2024 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ - **Copies:** 2 ## Key Components ### D1 — [MBR0520LT1G](https://www.flux.ai/adrian95/mbr0520lt1g~nu.md) - Manufacturer Name: onsemi - Part Type: Diode - Datasheet URL: https://www.onsemi.com/pdf/datasheet/mbr0520lt1-d.pdf - Manufacturer Part Number: MBR0520LT1G **Pins:** - A - K ### U1 — [LT3991EMSE-5#PBF](https://www.flux.ai/adrian95/lt3991emse-5pbf~6cj.md) - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/3991fa.pdf - Manufacturer Part Number: LT3991EMSE-5#PBF - Part Type: Integrated Circuit - Manufacturer Name: Analog Devices Inc. - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - BD [pin 1] - BOOST [pin 2] - EN [pin 5] - EPAD [pin 11] - PG [pin 9] - RT [pin 8] - SS [pin 7] - SW [pin 3] - SYNC [pin 10] - VIN [pin 4] - VOUT [pin 6] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/vasyl/lt3991-reference-design~n5](https://www.flux.ai/vasyl/lt3991-reference-design~n5).* --- *Generated from [https://www.flux.ai/vasyl/lt3991-reference-design~n5](https://www.flux.ai/vasyl/lt3991-reference-design~n5)*