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Visitor II
Aug 12, 2023 8:06 PM UTC
Question

STUSB4500 2.7V Supply Specs

I am interested in using the built-in 2.7V LDO on the STUSB4500 to power other parts of my circuit. Do you have any information on how much current this pin can source? And is the LDO hooked up to whatever VUSB is set to? For example, if the circuit is pulling 20V over USB, is the LDO hooked up to the 20V rail?

Thank you for your help!

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1 reply

RhSilicon
Lead
Aug 12, 2023 9:21 PM UTC

2.2.15 VREG_2V7

This pin is used only for external decoupling of the 2.7 V internal regulator. The recommended decoupling
capacitor is: 1 μF typ. (0.5 μF min., 10 μF max.)

https://www.st.com/resource/en/datasheet/stusb4500.pdf