Post Go back to editing

Power USB

Category: Hardware
Product Number: LTC4417

1) Power from USB 5 volts. I press the "on" button. Transistor VT1 does not open (+ VBat = 1 V).

2) Power from battery 6 volts. I press the "on" button. Transistor VT2 opens (+ VBat = 6 V).

Tell me why the power from USB does not turn on?