VL53L8CX Power up sequence

Mukeshk · ‎2025-04-27

Hi John,

Could please confirm if the slew rate requirement of VL53L8CX is satisfied in the EVM X-NUCLEO-53L8A1?

We're considering to use TI's TLV751180330PDSQR to power up the VL53L8CX sensor. But the TLV751180330PDSQR supports 11mV/µS approx. Also, there is no graph where we can infer the O/P slew for the LDK130M33RY or LDK130M18R.

John E KVAM · ‎2025-05-12

It doesn't matter much how long it takes the power comes up. The MCU is not running until you download the firmware and issue the start command. The VCSEL power is not required until you issue the start command.

The trick is just put capacitor or or use an LDO that does not come on extremely fast.

All those parts will work just fine.

- john

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