Urahara
Member
Hi
Been a while! Need help to see if my schematics is correct. Am designing a 5V power supply circuit for my PIC. See attached. For the 3V to 5V battery supply, am using a MAX756 IC. Datasheet recommended putting a rectifier schottky diode at the location specified. I assume this is to prevent battery reverse polarity.
Am wondering if it is ok to place the same diode(D3) further down to also function as a steering diode (two in one).
Also, to favour the wall wart power in the steering diode setup, I have placed a small 1ohm resistor in series with D3. This will drop about 0.15V (150ma * 1ohm). This should work right?
Appreciate your comments and advice. Thanks!
Been a while! Need help to see if my schematics is correct. Am designing a 5V power supply circuit for my PIC. See attached. For the 3V to 5V battery supply, am using a MAX756 IC. Datasheet recommended putting a rectifier schottky diode at the location specified. I assume this is to prevent battery reverse polarity.
Am wondering if it is ok to place the same diode(D3) further down to also function as a steering diode (two in one).
Also, to favour the wall wart power in the steering diode setup, I have placed a small 1ohm resistor in series with D3. This will drop about 0.15V (150ma * 1ohm). This should work right?
Appreciate your comments and advice. Thanks!