特性
1. 电源电压范围:2.7V ~ 5.5V
2. 工作温度范围:‑40℃ ~ 105℃
3. 逻辑引脚由EN_VIO供电,兼容电平:1.2V~5.5V
4. 高精度LED矩阵拓扑结构
4.1 最大输出电流 51mA
4.2 18路恒流灌电流输出 + 4路扫描开关,最多驱动72颗LED
4.3 扫描开关可配置1~4路启用
4.4 芯片间电流误差:±4%
4.5 通道间电流误差:±4%
5. 超低功耗
5.1 关断模式:EN_VIO为低电平时,芯片电流ICC ≤ 1μA
5.2 待机模式:EN_VIO为高、CHIP_EN=0(寄存器数据保持),ICC ≤ 2μA
5.3 工作模式:通道输出51mA时,典型芯片电流ICC = 2.4mA
6. 模拟调光
6.1 全局8bit电流配置,作用于全部LED灯点
6.2 每一路恒流灌电流通道独立8bit电流配置
7. 每个LED灯点具备12位PWM调光分辨率
8. 内置LED开路/短路检测功能
9. 消鬼影(De‑ghosting)功能
10. EMI抑制功能
10.1 扩频调制
10.2 电流源分组延时(CS‑Group delay)
10.3 压摆率可调
11. AW25072U 通信接口选择
11.1 IFS1、IFS0均为低:I2C,最高1MHz
11.2 IFS1低、IFS0高:
11.2.1 EN_VIO ≥ 3.6V:SPI最高20MHz
11.2.2 EN_VIO ≥ 1.8V:SPI最高12MHz
11.3 IFS1为高:
11.3.1 IFS0低:多从机UART,最高1.2MHz
11.3.2 IFS0高:单从机UART,最高1.2MHz
12. AW25072S 通信接口选择
12.1 IFS为低:I2C,最高1MHz
12.2 IFS为高:
12.2.1 EN_VIO ≥ 3.6V:SPI最高20MHz
12.2.2 EN_VIO ≥ 1.8V:SPI最高12MHz
13. 封装信息
13.1 QFN 4×4‑32L:AW25072SQNR、AW25072UQNR
13.2 超薄封装 FOWLP 2.367×2.367‑36B:AW25072SFOR
13.3 LQFP 7×7‑32L:AW25072UQPR
说明
AW25072S/U is a universal high-performance LED driver IC designed to drive up to an 18×4 LED matrix.
The device integrates both analog dimming and PWM dimming control modes. For analog dimming, each current sink can be adjusted with 256 steps. For PWM dimming, each LED can be adjusted with 4096 steps.
The device supports Auto-Breath-Pattern and has a flexible and efficient lighting effect programming function, which can reduce the resource occupation of the main controller.
The device supports advanced EMI reduction techniques such as programmable analog CS slew rate adjustment, CS-Group delay and spread spectrum clock modulation. It also includes features like independent open/short detection, de-ghosting, over-temperature protection (OTP), and thermal roll-off for robust system operation.
The device’s frame refresh rate can reach above 20 kHz, effectively preventing audible noise; the de-ghosting function is implemented via multi-gear negative voltage to protect LED beads from damage.