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PCA9958 - 24-channel SPI serial bus 63mA/5.5V constant current LED driver

General Description

PCA9958 is a daisy-chain SPI-compatible 4-wire serial bus controlled 24-channel constant 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.
  • 8 bits programmable LED brightness.
  • 8 bits programmable group dimming/blinking mixed with individual LED brightness.
  • Programmable LED output delay to reduce EMI and surge currents.
  • Gradation control for all channels.
  • Each channel can be assigned to one of six gradation control groups.
  • Programmable gradation time and rate for ramp-up and/or ramp-down operations.

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Datasheet Details

Part number PCA9958
Manufacturer NXP Semiconductors
File Size 847.97 KB
Description 24-channel SPI serial bus 63mA/5.5V constant current LED driver
Datasheet download datasheet PCA9958 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.

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PCA9958 24-channel SPI serial bus 63 mA/5.5 V constant current LED driver Rev. 1.0 — 31 January 2024 Product data sheet 1 General description PCA9958 is a daisy-chain SPI-compatible 4-wire serial bus controlled 24-channel constant current LED driver optimized for dimming and blinking 63 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 31.25 kHz with a duty cycle that is adjustable from 0 % to 100 % 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.