ZHCSQG6A March 2022 – May 2022 LP5891
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 Independent and Stackable Mode
- 7.3.2 Current Setting
- 7.3.3 Frequency Multiplier
- 7.3.4 Line Transitioning Sequence
- 7.3.5 Protections and Diagnostics
- 7.4 Device Functional Modes
- 7.5 Continuous Clock Series Interface
- 7.6 PWM Grayscale Control
- 7.7 Register Maps
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
封裝選項
機械數據 (封裝 | 引腳)
散熱焊盤機械數據 (封裝 | 引腳)
- RRF|76
訂購信息
7.3.2.2 Color Brightness Control (CC) Function
The LP5891 device is able to adjust the output current of each of the three color groups R0-R15, G0-G15, and B0-B15 separately. This function is called color brightness control (CC). For each color, it has 8-bit data register, CC_R, CC_G, or CC_B. Thus, all color group output currents can be adjusted in 256 steps from 0% to 100% of the maximum output current, IOUTSET. The output current of each color, IOUT_R (or G or B) can be calculated by Equation 2 below.
Equation 2. 
Table Table 7-3 shows the CC data versus the constant-current against IOUTSET:
Table 7-3 CC Data vs Current Ratio
| CC Register (CC_R or CC_G or CC_B) | Ratio of IOUTSET | |
|---|---|---|
| 0000 0000b | 1/256 | 0.39% |
| 0000 0001b | 2/256 | 0.78% |
| ... | ... | ... |
| 0111 1111b (default) | 128/256 | 50% |
| ... | ... | ... |
| 1111 1110b | 255/256 | 99.61% |
| 1111 1111b | 256/256 | 100% |