PCA9955BTW-ARD LED Driver Arduino® Shield Evaluation Board

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Supported Devices

Power Management

LED Drivers


Gradation Control

  • Support up to four groups of LED gradation control
  • Each LED channel assigned to one of four groups
  • Programmable gradation time and rate for ramp-up and/or ramp-down operation
  • Programmable hold-on time after ramp-up and hold-off time
  • Programmable brightness current output adjustment

Power Supply

  • Supply voltage: 3 V to 5.5 V
  • Low standby current (170 µA)

LED Current

  • 57 mA / 20 V output drive per channel
  • Output current accuracy:
    • ±4% channel to channel
    • ±6% chip to chip
  • Output current adjusts through resistor at REXT pin


  • 1 MHz I2C bus
  • Output enable (/OE) pin


  • HTSSOP28 - plastic thermal enhanced thin shrink small outline package, 28 leads, body width 4.4 mm, lead pitch 0.65 mm, exposed die pad

Buy Options


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  • PCA9955BTW-ARD

  • PCA9955BTW-ARD LED Driver Arduino® Shield Evaluation Board.

  • $97.35USD
  • For a quantity of 1
    • Availability: In stock
    • Inventory: 27
    • Shipping: Normally ships 1-2 business days
Order from distributors


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3 documents

Related Hardware

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Design Files

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2 design files


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