PCA9957 LED Driver Evaluation Board


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Supported Devices

Power Management

LED Drivers


Gradation control

  • 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
  • Programmable step time from 0.5 ms (min) to 512 ms (max)
  • Programmable final ramp-up and hold-on current/time
  • Programmable brightness current output adjustment


  • Supply voltage: 2.7 V to 5.5 V
  • Low standby current (170 µA)

LED current

  • 32 mA / 5.5 V output drive per channel
  • Output current accuracy:
    ±4% channel to channel
    ±6% chip to chip
  • Output current adjusts through resistor at REXT pin


  • 10 MHz SPI interface
  • Output Enable (/OE) pin

Buy Options


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  • 24-Channel SPI Serial Bus 32 MA/5.5 V Constant-Current LED Driver.

  • $522.50 USD
  • For a quantity of 1
    • Availability: In stock
    • Inventory: 13
    • Shipping: Normally ships 1-2 business days
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Quick reference to our documentation types.

2 documents

Design Resources

Design Files

2 design files


1 software file

Note: For better experience, software downloads are recommended on desktop.


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