VDD regulated voltage

L9777

16/25

Doc ID 13496 Rev 2

4

VDD regulated voltage

L9777 provides a second regulated voltage in tracking with VCC main regulator capable to

source load with up to 100 mA output current capability.

VDD tracking regulator function is controlled by VDD_EN input pin. If pin is set high VDD

voltage becomes available. If pin is set low or left floating regulator is disabled.

Note that VDD regulator will be disable also in case of undervoltage condition on VCC main

regulator, so at power up regulator will start up only when VCC rises over undervoltage

threshold without TRD power up delay time, even if VDD_EN pin is set high.