LED Drivers Support High-Brightness RGB Pixels

The CAT4103 and CAT4109 LED drivers from ON Semiconductor operate at up to 25V to support RGB-based pixels with power levels in excess of 10W.

The CAT4103 and CAT4109 are 3-channel, constant-current Low Dropout Drivers (LDD™), providing high-brightness RGB LED pixel control for high-visual impact architectural lighting.

The CAT4103 is designed for multicolour, intelligent LED-lighting applications. It features a 25MHz serial interface and offers buffered data outputs to ensure data integrity is maintained over long-distance distributed, daisychained lighting systems.

The CAT4109 uses a parallel interface and each channel has a dedicated PWM control. This suits more conventional LED visual effects, such as colour mixing.

Both devices support a wide range of constant-current drive values, up to 175mA on each channel, with dropout levels down to 0.3V at 60 mA. This ensures performance when driving long strings of LEDs.

 

FEATURES Three independent constant-current sinks rated to 25V 175mA LED current per channel Buffered output to ensure data integrity for distributed lighting systems (CAT4103) 25MHz serial interface (CAT4103) Individual PWM control for each channel (CAT4109) 16-lead SOIC package

APPLICATIONS Multicolour or intelligent architectural lighting (CAT4103) LED-based visual effects (CAT4109)

 

 

ON Semiconductor / CAT4103 & CAT 4109