# Buck boost converter 3.3V 500mA
## Description
there is a buck boost converter that can be powered through Li-ion battery and output 3.3V @500 mA. powered by the TPS63051YFFR and in the same package as a standard Adafruit buck converter.
input Voltage range:2.5V to 5.5V.
## Project Details
- **Owner:** smri
- **Created:** 6/21/2024
- **Last Updated:** 5/26/2025
- **Visibility:** Public
## Key Components
### H1 โ [MountingHole 2.5mm Pad](https://www.flux.ai/adrian95/mountinghole-25mm-pad~u8w.md)
- Manufacturer Part Number: MountingHole_Pad
**Pins:**
- 1
### J1 โ [Connector 01x04 Horizontal](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md)
- Part Type: Connector
**Pins:**
- PIN_1 [pin 1]
- PIN_2 [pin 2]
- PIN_3 [pin 3]
- PIN_4 [pin 4]
### U1 โ [TPS63051YFFR](https://www.flux.ai/markwuflux/tps63051yffr~hz.md)
- Manufacturer Name: Texas Instruments
- Manufacturer Part Number: TPS63051YFFR
- Datasheet URL: https://www.ti.com/lit/ds/symlink/tps63050.pdf?HQS=dis-mous-null-mousermode-dsf-pf-null-wwe&ts=1696455309239&ref_url=https%253A%252F%252Fwww.mouser.com%252F
**Pins:**
- EN [pin A3]
- FB [pin D2]
- GND [pin B1]
- ILIM0 [pin B2]
- ILIM1 [pin B3]
- L1 [pin A1]
- L2 [pin C1]
- PFM/PWM [pin C2]
- PG [pin C3]
- SS [pin D3]
- VIN [pin A2]
- VOUT [pin D1]
*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/smri/buck-boost-converter-3p3v-500ma~44](https://www.flux.ai/smri/buck-boost-converter-3p3v-500ma~44).*
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