Datasheet AK7864A (Asahi Kasei Microdevices) - 4
| Manufacturer | Asahi Kasei Microdevices |
| Description | 3 channel LED Driver with Charge Pump |
| Pages / Page | 13 / 4 — Current setting method |
| File Format / Size | PDF / 302 Kb |
| Document Language | English |
Current setting method
Model Line for this Datasheet
Text Version of Document
[AK7864A]
Current setting method
The method of setting the LED current is as follows. Latch the logic level of CONT_R, CONT_G, CONT_B at the EN rise. This logic pattern decides the current level. After the falling edge of the CONT_R, CONT_G, CONT_B, the LED current interlocks with CONT_R, CONT_G, CONT_B’s on or off. The current level is set here EN Turn RGB on Not turn on CONT_R CONT_G CONT_B After first fall, LED is on with EN high period. The relation between the CONT_R, CONT_G, CONT_B pattern and the current level follows. CONT_R CONT_G CONT_B Current setting 0 0 0 100% 0 0 1 87.5% 0 1 0 75% 0 1 1 62.5% 1 0 0 50% 1 0 1 37.5% 1 1 0 25% 1 1 1 12.5% MS1336 - E - 00 4 2012/01
Current setting method
The method of setting the LED current is as follows. Latch the logic level of CONT_R, CONT_G, CONT_B at the EN rise. This logic pattern decides the current level. After the falling edge of the CONT_R, CONT_G, CONT_B, the LED current interlocks with CONT_R, CONT_G, CONT_B’s on or off. The current level is set here EN Turn RGB on Not turn on CONT_R CONT_G CONT_B After first fall, LED is on with EN high period. The relation between the CONT_R, CONT_G, CONT_B pattern and the current level follows. CONT_R CONT_G CONT_B Current setting 0 0 0 100% 0 0 1 87.5% 0 1 0 75% 0 1 1 62.5% 1 0 0 50% 1 0 1 37.5% 1 1 0 25% 1 1 1 12.5% MS1336 - E - 00 4 2012/01
