I2C Boost and Shift V1.4
author: Catfoodman
2 layer board of 0.80 x 0.79 inches (20.4 x 20.1 mm)
Uploaded:
November 11, 2020
Shared:
November 11, 2020
Total Price:
$3.15
3V to 5V Boost and Shift
For connecting 5V I2C devices to a 3.3V bus. Uses an AP3602A charge pump to provide up to 100mA of 5.5V power to the device, and level-shifts the 3.3V I2C lines to 5V.
BOM:
- IC1 - AP3602A 3.3V Regulator (DigiKey AP3602AKTR-G1-ND, Mouser 621-AP3602AKTR-G1)
- Q1, Q2 - BSS138 MOSFET N-ch (DigiKey BSS138-FDICT-ND, Mouser 621-BSS138-7-F)
- C1, C2 - 10uF 0805 Capacitor (DigiKey 311-1877-1-ND, Mouser 603-CC805KKX5R7BB106)
- C3 - 0.1uF 0603 Capacitor (DigiKey 11-1776-1-ND, Mouser 603-C0603JRX7R7BB104 or equiv)
- R1-R4 - 10K 0603 Resistor (DigiKey 311-1776-1-ND, Mouser 603-AC0603FR-0710KL or equiv)
- R5 - 100K 0603 Resistor (DigiKey 311-100KLDCT-ND, Mouser 603-AC0603FR-07100KL or equiv)
3V to 5V Boost and Shift
For connecting 5V I2C devices to a 3.3V bus. Uses an AP3602A charge pump to provide up to 100mA of 5.5V power to the device, and level-shifts the 3.3V I2C lines to 5V.
BOM:
- IC1 - AP3602A 3.3V Regulator (DigiKey AP3602AKTR-G1-ND, Mouser 621-AP3602AKTR-G1)
- Q1, Q2 - BSS138 MOSFET N-ch (DigiKey BSS138-FDICT-ND, Mouser 621-BSS138-7-F)
- C1, C2 - 10uF 0805 Capacitor (DigiKey 311-1877-1-ND, Mouser 603-CC805KKX5R7BB106)
- C3 - 0.1uF 0603 Capacitor (DigiKey 11-1776-1-ND, Mouser 603-C0603JRX7R7BB104 or equiv)
- R1-R4 - 10K 0603 Resistor (DigiKey 311-1776-1-ND, Mouser 603-AC0603FR-0710KL or equiv)
- R5 - 100K 0603 Resistor (DigiKey 311-100KLDCT-ND, Mouser 603-AC0603FR-07100KL or equiv)
