LED照明驱动器 48-channel, 16bit ES PWM LED driver
The TLC5957 is a 48-channel constant current sink driver. Each channel has an individually-adjustable, 65536-step, pulse width modulation PWM grayscale GS brightness control.
The output channels are divided into three groups, each group has a 512 step color brightness control CC, CC adjusts brightness between colors. The maximum current value of all 48 channels can be set by 8-step global brightness control BC. BC adjusts brightness deviation between LED drivers. GS, CC and BC data are accessible via a serial interface port.
TLC5957 has one error flag: LED open detection LOD, which can be read via a serial interface port. Each constant-current has a pre-charge field- effect transistor FET, which can remove ghosting and improve display performance on the multiplexing LED display. Besides, TLC5957 has an enhanced circuit, it can cancel the caterpillar effect caused by LED open.
TLC5957 has a poker data transmission mode; GS data length can be configured from 9 bit to 16 bit according to PWM bits in each sub-segment. Poker Mode can significantly increase visual refresh rate in multiplexing applications.
输出接口数 16
输出电流 0.025 A
通道数 48
输入电压DC Max 5.5 V
输入电压DC Min 3 v
输出电压Max 5.5 V
输出电压Min 2.6 V
输出电流Max 30 mA
输出电流Min 0.02 A
工作温度Max 85 ℃
工作温度Min -40 ℃
安装方式 Surface Mount
引脚数 56
封装 QFN-56
长度 8 mm
宽度 8 mm
高度 1 mm
封装 QFN-56
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
TLC5957RTQT TI 德州仪器 | 当前型号 | 当前型号 |
TLC5957RTQR 德州仪器 | 类似代替 | TLC5957RTQT和TLC5957RTQR的区别 |