| ??? 08/13/13 01:15 Read: times |
#189995 - .. or multiple onboard regulators Responding to: ???'s previous message |
Andy Peters said:
I've done a couple of USB designs, and none of the logic requires 5V. The bus supply is always regulated down to 3.3V. Some (most?) USB micros these days have an onboard regulator which supplies 3.3V from the bus supply. The better parts can even have multiple onboard regulators. Take the Nuvoton NUC12x series as an example, that has 5V VBUS in, a 5V to 3.3V regulator for the USB-Driver pins (those need 3.3V differential), and another 1.8V regulator, for the uC core logic. The IO pins, can power from anywhere between 2.5-5.5V |
| Topic | Author | Date |
| New SiLabs F85x/6x | 01/01/70 00:00 | |
| A good addition | 01/01/70 00:00 | |
| you may, as well, get used to 3V3 | 01/01/70 00:00 | |
| 1.8-5.5V :: is the new game in town. | 01/01/70 00:00 | |
| if i need a 3V3 chip .... | 01/01/70 00:00 | |
| Try Logic level power FETS | 01/01/70 00:00 | |
| USB 5V | 01/01/70 00:00 | |
| .. or multiple onboard regulators | 01/01/70 00:00 | |
lots of chips these days have that | 01/01/70 00:00 |