PCA9533 Overview
SO8, TSSOP8 (MSOP8) DESCRIPTION The PCA9533 is a 4-bit I2C and SMBus I/O expander optimized for dimming LEDs in 256 discrete steps for Red/Gree.
PCA9533 Key Features
- 4 LED drivers (on, off, flashing at a programmable rate)
- 2 selectable, fully programmable blink rates (frequency and duty
- 256 brightness steps
- Input/outputs not used as LED drivers can be used as regular
- Internal oscillator requires no external ponents
- I2C interface logic patible with SMBus
- Internal power-on reset
- Noise filter on SCL/SDA inputs
- 4 open drain outputs directly drive LEDs to 25 mA
- Edge rate control on outputs