2-Bit I²C-Bus LED Dimmer

Product Details

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Block Diagram

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PCA9530 Block Diagram

PCA9530 Block Diagram

Block diagram: PCA9530D, PCA9530DP


  • 2 LED drivers (on, off, flashing at a programmable rate)
  • 2 selectable, fully programmable blink rates (frequency and duty cycle) between 0.591 Hz and 152 Hz (1.69 seconds and 6.58 milliseconds)
  • 256 brightness steps
  • Input/output not used as LED drivers can be used as regular GPIOs
  • Internal oscillator requires no external components
  • I²C-bus interface logic compatible with SMBus
  • Internal power-on reset
  • Noise filter on SCL/SDA inputs
  • Active LOW reset input (RESET)
  • 2 open-drain outputs directly drive LEDs to 25 mA
  • Edge rate control on outputs
  • No glitch on power-up
  • Supports hot insertion
  • Low standby current
  • Operating power supply voltage range of 2.3 V to 5.5 V
  • 0 Hz to 400 kHz clock frequency
  • ESD protection exceeds 2000 V HBM per JESD22-A114, 150 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
  • Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
  • Packages offered: SO8, TSSOP8 (MSOP8)


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Design Resources

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Design Files

3 design files

  • Models

    PCA9530 IBIS model

  • Symbols and Footprints

    PCA9530D-SO8-CAD Symbol and PCB Footprint – BXL File

  • Symbols and Footprints

    PCA9530DP_TSSOP8-CAD Symbol and PCB Footprint – BXL File


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