# LT1933 Reference Design ## Description This is a reference design of buck based on LT1933 with an internal 0.75A power switch and 3.3V output #3V3 #dcdc #power #referenceDesign #powermanagement #analogdevices #template #reference-design ## Project Details - **Owner:** vasyl - **Created:** 6/6/2023 - **Last Updated:** 2/8/2024 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ - **Copies:** 3 ## Key Components ### D1 — [MBRA140T3G](https://www.flux.ai/adrian95/mbra140t3g~crb.md) - Part Type: Diode - Datasheet URL: https://www.onsemi.com/pdf/datasheet/mbra140t3-d.pdf - Manufacturer Name: ON Semiconductor - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MBRA140T3G **Pins:** - ANODE [pin 1] - CATHODE [pin 2] ### D2 — [1N4148WS-7](https://www.flux.ai/jecstronic/1n4148ws-7~ei.md) - Part Type: Diode - Manufacturer Part Number: 1N4148WS-7 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: SMC Diode Solutions - Datasheet URL: https://www.mouser.com/datasheet/2/308/1N914BWS-D-1801390.pdf **Pins:** - A [pin 2] - K [pin 1] ### IC1 — [LT1933ES6#TRPBF](https://www.flux.ai/vasyl/lt1933es6trpbf~e0b.md) - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/1933fe.pdf - Part Type: DC DC Switching Regulators - Manufacturer Name: Analog Devices Inc. - Manufacturer Part Number: LT1933ES6#TRPBF - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - *SHDN [pin 4] - BOOST [pin 1] - FB [pin 3] - GND [pin 2] - SW [pin 6] - VIN [pin 5] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/vasyl/lt1933-reference-design~y8](https://www.flux.ai/vasyl/lt1933-reference-design~y8).* --- *Generated from [https://www.flux.ai/vasyl/lt1933-reference-design~y8](https://www.flux.ai/vasyl/lt1933-reference-design~y8)*