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PCA9633D 4bit I2C RGBA LED dimmer
[SO16 3,9mm]
€1.62

PCA9633D 4bit I2C RGBA LED dimmer

The PCA9633 is an I2C-bus controlled 4-bit LED driver optimized for Red/Green/Blue/Amber (RGBA) color mixing applications. Each LED output has its own 8-bit resolution (256 steps) fixed frequency Individual PWM controller that operates at 97 kHz with a duty cycle that is adjustable from 0 % to 99.6 % to allow the LED to be set to a specific brightness value. A fifth 8-bit resolution (256 steps) Group PWM controller has both a fixed frequency of 190 Hz and an adjustable frequency between 24 Hz to once every 10.73 seconds with a duty cycle that is adjustable from 0 % to 99.6 % that is used to either dim or blink all LEDs with the same value.

features:

  • 4 LED drivers (on, off, Programmable LED brightness, Programmable group dimming/blinking mixed with individual LED brightness )
  • 256-step (8-bit) linear programmable brightness per LED output varying from fully off (default) to maximum brightness using a 97 kHz PWM signal
  • 256-step group brightness control allows general dimming (using a 190 Hz PWM signal) from fully off to maximum brightness (default)
  • 256-step group blinking with frequency programmable from 24 Hz to 10.73 s and duty cycle from 0 % to 99.6 %
  • Four totem pole outputs (sink 25 mA and source 10 mA at 5 V) with software programmable open-drain LED outputs selection (default at totem pole). No input function.
  • 7 hardware address pins allow up to 126 devices to be connected to the same bus.
  • 4 software programmable I2C-bus addresses (one LED Group Call address and three LED Sub Call addresses) allow groups of devices to be addressed at the same time in any combination (for example, one register used for ‘All Call’ so that all the PCA9633s on the I2C-bus can be addressed at the same time and the second register used for three different addresses so that 1⁄3 of all devices on the bus can be addressed at the same time in a group). Software enable and disable for I2C-bus address.
  • Noise filter on SCL/SDA inputs
  • Low standby current
  • Edge rate control on outputs
  • No glitch on power-up
  • Operating power supply voltage range of 2.3 V to 5.5 V
  • DATASHEET.
    This product was added to our catalog on Monday 06 October, 2008.
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