Hi everyone,
I’m working with the VL53L0X sensor and I noticed that when it starts ranging, the supply voltage (of my board with the VL53L0X, the Vcc pin) drops from 3.389 V down to 2.544 V.
In this setup, the VL53L0X is powered from the 3.3 V pin of a NodeMCU V2 board (powered via USB from my computer). The 3.3 V rail on that board comes from an NCP1117ST33T3G regulator, which is rated for 1 A output current.
I also tried powering the NodeMCU using a 5 V / 2 A phone charger instead of USB, but the voltage drop still occurs.
The sensor is mounted on an Adafruit VL53L0X breakout board, similar to this one .
According to its schematic, it includes a XC6206P332MR regulator that provides 3.3 V @ 200 mA.
So my question is:
Is this voltage drop caused by a large current consumption from the VL53L0X during ranging operations, or could there be another cause (e.g. the onboard regulator, wiring, or setup)?
Thanks in advance for your help!
