LED driver/blinker

Catalyst Semiconductor has added a 16-channel I²C/SMBus LED driver/blinker to its range of bus products.

The CAT9552 drives up to 16 LEDs in either programmable flashing or ‘on/off’ modes. The device is suitable for applications including advertising point-of-sale signage with flashing LEDs and any type of consumer or industrial equipment with on/off LED indicators.

It is designed with an internal oscillator and two programmable on/off or blink rate timers, adjustable from 0.02 to 5.8 s. This oscillator and its two timers reduce overall parts count and reduce the I²C bus traffic.

An added benefit of the CAT9552 is that I/Os not used for controlling LEDs can be used as general-purpose I/Os.

Features include: 16 open drain outputs drive 25 mA each; two programmable on/off and blink rate timers (adjustable from 0.02 to 5.8 s); I/Os can be used as general-purpose I/Os.