LM5143-Q1: VCC active when both EN pins are low

Arne Maathuis

Part Number: LM5143-Q1

Hello, is the internal VCC regulator active when both EN1 and EN2 pins are low?

i want to power some external UVLO and OVLO circuitry from this rail to monitor the VIN rail, might save some cost on external regulators by doing this.

Regards Arne Maathuis

over 4 years ago

+1 Timothy Hegarty over 4 years ago

TI__Guru* 76142 points

Hi Arne,

The VCC subregulator is off when the EN voltages are low. This is to minimize the sleep quiescent current.

Regards,

Tim

+1 Arne Maathuis over 4 years ago

Prodigy 120 points

Thank you for your answer!

Regards, Arne Maathuis

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LM5143-Q1: VCC active when both EN pins are low