| ??? 07/31/08 20:39 Read: times |
#157200 - Don't connect Responding to: ???'s previous message |
You should normally never connect two outputs unless the datasheet specifies that it is allowed.
For normal outputs, you would need a serial resistor - just as for diodes - to take up any differences between the two outputs. In this case, the chip has constant-current outputs, so it has its own load control. How much current to you take out / pin. It seems like 30..90mA should be supported, with a maximum voltage of 17V. With 5 diodes in series, a single pin will only need to give out 30mA to drive all five LEDs, so there will be no need to connect multiple outputs. You will get a nice and safe solution implemented as the chip manufacturer expected you to use the chip. |
| Topic | Author | Date |
| Outdoor Display 2 | 01/01/70 00:00 | |
| you can't | 01/01/70 00:00 | |
| seconded | 01/01/70 00:00 | |
| Have seen parallel-connected LEDs | 01/01/70 00:00 | |
| Who broke the breaks? | 01/01/70 00:00 | |
| Lousy, cross-wired fingers | 01/01/70 00:00 | |
| in series!! | 01/01/70 00:00 | |
| Uneven load | 01/01/70 00:00 | |
| most often for pure mechanical reasons | 01/01/70 00:00 | |
| Temperature Problems | 01/01/70 00:00 | |
| Don't connect | 01/01/70 00:00 | |
Serial connection it is | 01/01/70 00:00 | |
| the problem with the 16 bitters | 01/01/70 00:00 |