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PCA9955 - 16-channel constant current LED driver

Download the PCA9955 datasheet PDF. This datasheet also covers the PCA9952 variant, as both devices belong to the same 16-channel constant current led driver family and are provided as variant models within a single manufacturer datasheet.

General Description

The PCA9952 and PCA9955 are I2C-bus controlled 16-channel constant current LED driver optimized for dimming and blinking 57 mA Red/Green/Blue/Amber (RGBA) LEDs in amusement products.

Key Features

  • 16 LED drivers. Each output programmable at:.
  • Off.
  • On.
  • Programmable LED brightness.
  • Programmable group dimming/blinking mixed with individual LED brightness.
  • Programmable LEDn output enable delay to reduce EMI and surge currents.
  • 16 constant current output channels can sink up to 57 mA, tolerate up to 40 V when OFF.
  • Output current adjusted through an external resistor.
  • Output current accuracy.
  • 6 % between output channels.
  • 8 % between PCA9.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (PCA9952-NXP.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

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PCA9306-Q1 SMBus Voltage-Level Translator Texas Instruments
PCA9502 8-bit I/O expander NXP Semiconductors

Other Datasheets by NXP Semiconductors

Part Number Description
PCA9955-Q900 16-channel constant current LED driver
PCA9955A 16-channel Fm+ I2C-bus 57 mA/20 V constant current LED driver
PCA9955Q900 16-channel constant current LED driver
PCA9952 16-channel constant current LED driver
PCA9952-Q900 16-channel constant current LED driver

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
PCA9952; PCA9955 16-channel Fm+ I2C-bus 57 mA constant current LED driver Rev. 7.1 — 29 June 2015 Product data sheet 1. General description The PCA9952 and PCA9955 are I2C-bus controlled 16-channel constant current LED driver optimized for dimming and blinking 57 mA Red/Green/Blue/Amber (RGBA) LEDs in amusement products. Each LEDn output has its own 8-bit resolution (256 steps) fixed frequency individual PWM controller that operates at 31.25 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 122 Hz and an adjustable frequency between 15 Hz to once every 16.8 seconds with a duty cycle that is adjustable from 0 % to 99.