SNVSD24 August 2025 LP5814I
PRODUCTION DATA
There are two methods to control the current gain of each output channel.
The maximum output current IOUT_max of each channel can be programmed by the 1 bit MAX_CURRENT. When the device is powered on, the default value of MC is 0h, which is 25.5mA.
| 1-bit Maximum Current (MC) | IOUT_MAX (mA) | |
|---|---|---|
| Binary | Decimal | |
| 0 (default) | 0 (default) | 25.5 (default) |
| 1 | 1 | 51 |
The LP5814I can individually adjust the analog output current of each channel by using Dot Current (DC) function. The brightness deviation among the LED bins can be minimized to achieve uniform display performance through the DC setting. The DC is programmed in an 8-bit depth, so the analog current can be adjusted with 256 steps from 0 to 100% of IOUT_MAX.. The default value of all DC is 0h, which is not current output.
| 8-bits Dot Current (DC) Register | Ratio of IOUT_MAX | |
|---|---|---|
| Binary | Decimal | |
| 0000 0000 (default) | 0 (default) | 0% (default) |
| 0000 0001 | 1 | 0.39% |
| 0000 0010 | 2 | 0.78% |
| --- | --- | --- |
| 1000 0000 | 128 | 50.2% |
| --- | --- | --- |
| 1111 1101 | 253 | 99.2% |
| 1111 1110 | 254 | 99.6% |
| 1111 1111 | 255 | 100% |
By configuring the MC and DC, the analog output current of each channel can be calculated as Equation 1:
The average output current of each channel can be calculated as Equation 2: