| ??? 03/06/06 13:02 Read: times |
#111351 - If DM mean diode matrix, then Responding to: ???'s previous message |
My original reply is correct. This is the MAX6953 chip we are discusiing here and ALL DM pins do wire directly to that chip, so there are no external supply lines being used wired to the DM.
If DM mean diode matrix, then you will need to either decouple the V+ DRAMATICALLY or, even better, regulate it on each board from e.g. a 12V line. I PWM switch LEDs and with a separate supply for V+LED I have, on that line "bumps" that could make the logic crash. I have not seen you post your LED current, but my 50A 3V3 switched does really "move" whenturned on/off Erik |
| Topic | Author | Date |
| m5451 3 output bits | 01/01/70 00:00 | |
| please no numbers | 01/01/70 00:00 | |
| m5451 | 01/01/70 00:00 | |
| maybe you can, but with some trouble | 01/01/70 00:00 | |
| ST 4-5 digit LED driver | 01/01/70 00:00 | |
| ??? | 01/01/70 00:00 | |
| multiplexing | 01/01/70 00:00 | |
| multiplexing chips. | 01/01/70 00:00 | |
| seek and ye shall find | 01/01/70 00:00 | |
| Intersil and Maxium | 01/01/70 00:00 | |
| Erik | 01/01/70 00:00 | |
| sure | 01/01/70 00:00 | |
| EE question. | 01/01/70 00:00 | |
| the problem is not power | 01/01/70 00:00 | |
| i2c | 01/01/70 00:00 | |
| i2c | 01/01/70 00:00 | |
| no answer possible | 01/01/70 00:00 | |
| module "string" | 01/01/70 00:00 | |
| Current? | 01/01/70 00:00 | |
| current. | 01/01/70 00:00 | |
| Supply lines | 01/01/70 00:00 | |
| Remember ground | 01/01/70 00:00 | |
| ground last module. | 01/01/70 00:00 | |
| last module. | 01/01/70 00:00 | |
| I disagree | 01/01/70 00:00 | |
| supply lines | 01/01/70 00:00 | |
| Sorry, my bad | 01/01/70 00:00 | |
| supply lines. | 01/01/70 00:00 | |
| If DM mean diode matrix, then | 01/01/70 00:00 | |
| DM | 01/01/70 00:00 | |
| you still are, where is the answer? | 01/01/70 00:00 | |
| still are. | 01/01/70 00:00 | |
not the capability of the driver, the cu | 01/01/70 00:00 |