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PCA9685 - 12-bit PWM Fm I2C-bus LED controller

Description

The PCA9685 is an I2C-bus controlled 16-channel LED controller optimized for Red/Green/Blue/Amber (RGBA) color backlighting applications.

Features

  • 16 LED drivers. Each output programmable at:.
  • Off.
  • On.
  • Programmable LED brightness.
  • Programmable LED turn-on time to help reduce EMI.
  • 1 MHz Fast-mode Plus compatible I2C-bus interface with 30 mA high drive capability on SDA output for driving high capacitive buses.
  • 4096-step (12-bit) linear programmable brightness per LED output varying from fully off (default) to maximum brightness.
  • LED output frequency (all LEDs) typically varies from 24 Hz to 1526 Hz.

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Datasheet preview – PCA9685

Datasheet Details

Part number PCA9685
Manufacturer NXP Semiconductors
File Size 352.60 KB
Description 12-bit PWM Fm I2C-bus LED controller
Datasheet download datasheet PCA9685 Datasheet
Additional preview pages of the PCA9685 datasheet.

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Full PDF Text Transcription

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PCA9685 16-channel, 12-bit PWM Fm+ I2C-bus LED controller Rev. 4 — 16 April 2015 Product data sheet 1. General description The PCA9685 is an I2C-bus controlled 16-channel LED controller optimized for Red/Green/Blue/Amber (RGBA) color backlighting applications. Each LED output has its own 12-bit resolution (4096 steps) fixed frequency individual PWM controller that operates at a programmable frequency from a typical of 24 Hz to 1526 Hz with a duty cycle that is adjustable from 0 % to 100 % to allow the LED to be set to a specific brightness value. All outputs are set to the same PWM frequency. Each LED output can be off or on (no PWM control), or set at its individual PWM controller value.
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