I2C Interfaced 16-bit LED Dimmer, I2C Interfaced 16-bit LED Blinker
●Features
●■ 256 discrete brightness steps for easy LED dimming and color mixing
●■ two programmable blinking rate between 0.625 sec and 1.6 sec for CAT9532; 0.02sec and 6.4 sec for CAT9552
●■ eliminates repeated commands to turn on/off LEDs, reducing I2C traffi c
●■ drives up to 16 LEDs; any bit that is not used to drive an LED can be used as a GPIO
●■ 25mA sink current per bit (max 200mA per device)
●■ each port can be individually turned on, off, or programmed to blink
●■ during power-up or when a manual reset (hardware reset) is asserted, all outputs are set to off-mode
●■ built in noise fi lter for SDA/SCL inputs
●■ 0-400KHz clock frequency
●Applications
●■ LED dimming
●■ LCD backlighting
●■ celluar phones
