8-Bit I²C-Bus LED Driver with Programmable Blink Rates

See product image

Product Details

Block Diagram

Choose a diagram:

PCA95 Block Diagram

PCA95 Block Diagram

Block diagram: PCA9551BS, PCA9551D, PCA9551PW

Features

  • 8 LED drivers (on, off, flashing at a programmable rate)
  • 2 selectable, fully programmable blink rates (frequency and duty cycle) between 0.148 Hz and 38 Hz (6.74 seconds and 0.026 seconds)
  • Input/outputs 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
  • 8 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: SO16, TSSOP16, HVQFN16

Part numbers include: PCA9551BS, PCA9551D, PCA9551PW.

Buy/Parametrics










































































































Documentation

Quick reference to our documentation types.

1-5 of 17 documents

Show All

Design Files

Quick reference to our design files types.

3 design files

Support

What do you need help with?