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PCA9531D 8bit I2C LED dimmer
[SO16 3,9mm]
€2.54

PCA9531D 8bit I2C LED dimmer

The PCA9531 is an 8-bit I2C-bus and SMBus I/O expander optimized for dimming LEDs in 256 discrete steps for Red/Green/Blue (RGB) color mixing and back light applications.

Features:

  • Eight LED drivers (on, off, flashing at a programmable rate)
  • Two selectable, fully programmable blink rates (frequency and duty cycle) between 0.59 Hz and 152 Hz (1.69 second and 6.58 milliseconds)
  • 256 brightness steps
  • Input/outputs not used as LED drivers can be used as regular GPIOs
  • Internal oscillator requires no external components
  • I2C-bus interface logic compatible with SMBus
  • Internal power-on reset
  • Noise filter on SCL/SDA inputs
  • Active LOW reset input
  • Eight open-drain outputs directly drive LEDs to 25 mA
  • Edge rate control on outputs
  • No glitch on power-up
  • Supports hot insertion
  • Low standby current
  • Operating power supply voltage range of 2.3 V to 5.5 V
  • 0 Hz to 400 kHz clock frequency
  • DATASHEET.
    This product was added to our catalog on Monday 06 October, 2008.
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