# LM3671 3.3V Buck Converter Breakout ## Description LM3671 3.3V Buck Converter Breakout - 3.3V Output 600mA Max. Your power supply problems just got SUPER SOLVED! This 3.3V Buck Converter Breakout board is great for supplying power to low voltage circuits from a single Li-Ion cell battery or USB power. This chip provides up to 600-mA load current across the entire input voltage range of 3.5 to 5.5V. Great for your portable project, we made this "pin compatible" with the LM1117-3.3V TO-220 chip so you can swap it in for better performance (90-95% efficiency!) There's also an ENable pin, tie it low to shut down the output completely. ## Project Details - **Owner:** lolobee - **Created:** 11/20/2023 - **Last Updated:** 11/20/2023 - **Visibility:** Public - **Forks:** 2 ## Key Components ### J1 — [Pin Header 01x04 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x04-254mm-vertical~l97.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] ### U1 — [LM3671MF-3.3/NOPB](https://www.flux.ai/adrian95/lm3671mf-33nopb~pxx.md) - Manufacturer Part Number: LM3671MF-3.3/NOPB - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Flm3671 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Manufacturer Name: Texas Instruments **Pins:** - EN [pin 3] - FB [pin 4] - GND [pin 2] - SW [pin 5] - VIN [pin 1] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/lolobee/lm3671-3p3v-buck-converter-breakout~dg](https://www.flux.ai/lolobee/lm3671-3p3v-buck-converter-breakout~dg).* --- *Generated from [https://www.flux.ai/lolobee/lm3671-3p3v-buck-converter-breakout~dg](https://www.flux.ai/lolobee/lm3671-3p3v-buck-converter-breakout~dg)*