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PCU9654 - 8-bit UFm 5MHz I2C-bus 100mA 40V LED driver

Description

The PCU9654 is a UFm I2C-bus controlled 8-bit LED driver optimized for voltage switch dimming and blinking 100 mA Red/Green/Blue/Amber (RGBA) LEDs.

Features

  • 8 LED drivers. Each output programmable at:.
  • Off.
  • On.
  • Programmable LED brightness.
  • Programmable group dimming/blinking mixed with individual LED brightness.
  • 5 MHz Ultra Fast-mode I2C-bus interface.
  • 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 brigh.

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Full PDF Text Transcription

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PCU9654 8-bit UFm 5 MHz I2C-bus 100 mA 40 V LED driver Rev. 1 — 2 July 2012 Product data sheet 1. General description The PCU9654 is a UFm I2C-bus controlled 8-bit LED driver optimized for voltage switch dimming and blinking 100 mA Red/Green/Blue/Amber (RGBA) LEDs. 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. An additional 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.
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