{"title":"Adafruit QT 3V to 5V Level Booster Breakout - STEMMA QT / Qwiic","handle":"adafruit-qt-3v-to-5v-level-booster-breakout-stemma-qt-qwiic","url":"/products/adafruit-qt-3v-to-5v-level-booster-breakout-stemma-qt-qwiic","description":"The Adafruit QT 3V to 5V Level Booster Breakout lets you connect 3.3 V STEMMA QT / Qwiic devices to sensors and peripherals that require 5 V power or logic. Most modern microcontrollers (ESP32, RP2040, SAMD, micro:bit) run at 3.3 V, but some sensors and modules still need 5 V — this board bridges the gap with a charge-pump boost regulator and I2C level shifting.\n\nOn the input side, connect your 3.3 V STEMMA QT / Qwiic cable. In the middle, the AP3602A charge-pump regulator boosts power to 5 V (100 mA continuous, 250 mA peak) while level-shifting circuitry translates I2C signals. The output side provides 5 V power and 5 V I2C logic to your device. A solder jumper on the back lets you keep I2C logic at 3.3 V if only the power needs boosting.\n\nKey Features\n\n\n3.3 V to 5 V Boost – AP3602A charge-pump regulator provides 100 mA continuous (250 mA peak) at 5 V\n\nI2C Level Shifting – Safely translates 3.3 V I2C signals to 5 V logic\n\nSTEMMA QT / Qwiic Connectors – Plug-and-play I2C on both sides; no soldering required\n\nConfigurable Logic Level – Solder jumper to set output I2C to 3.3 V when only power boosting is needed\n\nBreadboard Friendly – Breakout pins for prototyping; doubles as a QT-to-perfboard adapter\n\n\nIdeal For\n\nConnecting 5 V sensors to 3.3 V microcontrollers via I2C\nPowering 5 V I2C devices from 3.3 V STEMMA QT / Qwiic systems\nBridging legacy 5 V modules into modern 3.3 V projects\nBreadboard prototyping with STEMMA QT breakout\n\n\n\nNote: STEMMA QT / Qwiic cable is not included. You will need a compatible JST SH 4-pin cable to connect this board.\n\n\nResources\n\nWhat is STEMMA QT?\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":1805,"title":"Default Title","sku":"AF-5649","price":5.75,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":105,"option1":"Default Title"}]}