I want to use the LT1763IS8-1.8 chip to convert +5V to 1.8V. The schematic and PCB are as follows, but in the actual circuit, the output of the 1-pin is measured by a multimeter to be 2.1V, and the +5V input is also reduced to 4.5V. Why, what should I do.
With best regards and wishes.
Please check first your input voltage. Input voltage should not be reduced to 4.5V whatsoever and should be fixed at 5V.
Please check if there are any shorted solder on the board especially on the input side.