# TPS63802 3\.3V Buck\-Boost Regulator 6248

## Description

Single\-subsystem 3\.3 V synchronous buck\-boost regulator reference built around the TI TPS63802DLAR in a 10\-pin VSON package\. The design accepts a VBUS input rail into VIN, uses a Bourns SRP4020TA\-4R7M 4\.7 µH power inductor between L1/L2, and generates PP3V3 from the adjustable TPS63802 output path\. The TPS63802 metadata lists a 1\.3 V to 5\.5 V input range, 2 A output current, selectable switching\-frequency modes around 1\.4 MHz to 2\.1 MHz, and \-40 °C to \+125 °C junction operation\. Support circuitry includes 22 µF and 1 µF ceramic input/output capacitors, a 511 kΩ / 91 kΩ feedback divider for the PP3V3\_FB node, a VBUS\-derived enable divider using 93\.1 kΩ and 100 kΩ resistors, MODE tied to GND, and a 100 kΩ pull\-up from PP3V3 to the power\-good output\. Intended as a reusable compact 3\.3 V buck\-boost power\-supply module for USB, battery, portable, IoT, or embedded sensor designs\.

## Project Details

- **Owner:** ryanf
- **Created:** 7/22/2026
- **Last Updated:** 7/23/2026
- **Visibility:** Public
- **License:** https://creativecommons\.org/publicdomain/zero/1\.0/

## Key Components

### U1 — [TPS63802DLAR](https://flux.ai/lcsc/tps63802dlar~f4j8.md)

- LCSC Part Number: C2845237
- JLCPCB Part Class: Extended Part
- Manufacturer Name: TI\(德州仪器\)
- Part Type: DC\-DC Converters
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tps63802\.pdf
- Manufacturer Part Number: TPS63802DLAR
- Symbol Style: parametric\-v1
- Operating Temperature: \-40℃\~\+125℃@\(TJ\)
- Package or Case Code: VSON\-10\_L3\.0\-W2\.0\-P0\.50\-TL
- Output Current: 2A
- Max Input Voltage: 1\.3\~5\.5V
- Frequency: 2\.1MHz;1\.4MHz;1\.6MHz

**Pins:**
- AGND [pin 3]
- EN [pin 1]
- FB [pin 4]
- GND [pin 8]
- L1 [pin 9]
- L2 [pin 7]
- MODE [pin 2]
- PG [pin 5]
- VIN [pin 10]
- VOUT [pin 6]

*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://flux\.ai/ryanf/tps63802\-3p3v\-buck\-boost\-regulator\-6248\~ps4](https://flux.ai/ryanf/tps63802-3p3v-buck-boost-regulator-6248~ps4).*

---

*Generated from [https://flux\.ai/ryanf/tps63802\-3p3v\-buck\-boost\-regulator\-6248\~ps4](https://flux.ai/ryanf/tps63802-3p3v-buck-boost-regulator-6248~ps4)*