Datasheet4U Logo Datasheet4U.com

PCA9959 - LED driver

General Description

PCA9959 is a daisy-chain SPI-compatible 4-wire serial bus controlled 24-channel constant preset current LED driver, optimized for dimming and blinking 63 mA Red/ Green/Blue/Amber (RGBA) LEDs.

Key Features

  • 24 LED drivers, each output programmable at:.
  • Off.
  • On.
  • 6 bits programmable LED brightness.
  • Programmable LED output delay to reduce EMI and surge currents.
  • Gradation control for all channels.
  • Each channel can assign to one of four gradation control groups.
  • 64 grids for gradation control for each channel.
  • Programmable grid duration time.
  • Four preset current options for each channel during gradation control.

📥 Download Datasheet

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
PCA9959 24-channel SPI serial bus 63 mA/5.5 V constant current LED driver Rev. 1.3 — 23 May 2022 Product data sheet 1 General description PCA9959 is a daisy-chain SPI-compatible 4-wire serial bus controlled 24-channel constant preset current LED driver, optimized for dimming and blinking 63 mA Red/ Green/Blue/Amber (RGBA) LEDs. Each LED output has its own 6-bit resolution (64 steps) preset current configuration, with an absolute accuracy of ±8 %. PCA9959 supports up to four groups of LED gradation control, with each LED channel assigned to one of the groups. For each group, PCA9959 supports 64-grid brightness control, with the time duration of each grid adjustable from 2.5 μs to 1 ms. Each LED output can be off or on, set at its individual preset current value within each grid.