丝印：PCA9955BTW；Package：HTSSOP28；16-channel Fm I2C-bus 57 mA/20 V constant current LED driver

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16通道Fm+ I²C总线57 mA/20 V恒定电流LED驱动器

The PCA9955B is an I2C-bus controlled 16-channel constant current LED driver optimized for dimming and blinking 57 mA Red/Green/Blue/Amber (RGBA) LEDs in amusement products. Each LED output has its own 8-bit resolution (256 steps) fixed frequency individual PWM controller that operates at 31.25 kHz • 16 LED drivers. Each output programmable at:• Off\n• On\n• Programmable LED brightness\n• Programmable group dimming/blinking mixed with individual LED brightness\n• Programmable LED output delay to reduce EMI and surge currents\n• Gradation control for all channels• Each channel can assign to one;

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