A6285

A6285 16-Channel Constant-Current Latched LED Driver with Open LED Detection and Dot Correction Features and Benefits ▪ 3.0 to 5.5 V logic supply range ▪ Schmitt trigger inputs for improved noise immunity ▪ Power-On Reset (POR) ▪ Up to 80 mA constant-current sinking outputs ▪ LED open circuit detection (LOD) ▪ Dot correction (DC) for adjusting LED light intensity on each channel with 7-bit resolution ▪ Low-power CMOS logic and latches ▪ High data input rate up to 30 MHz ▪ Active output pull-ups with enable/disable ▪ 20 ns typical staggering delay between outputs ▪ Internal UVLO and thermal shutdown (TSD) circuitry ▪ Fault output flags for an LED open circuit (LOD) or a thermal shutdown (TSD) condition Package: 32 Contact QFN (suffix ET) 5 mm × 5 mm 0.90 mm nominal overall height Not to scale Description The A6285 is designed for LED display applications. This BiCMOS device includes an On/Off shift register, a Dot Correction (DC) shift register, accompanying data latches, and 16 MOS constant-current sink drivers with active pull-ups that can be enabled or disabled as required by the application. The CMOS shift registers and latches allow direct interfacing with microprocessor-based systems. With a 3.3 or 5 V logic supply, typical serial data input rates can reach up to 30 MHz. The LED drive current level can be set by a single external resistor, selected by the application designer. A CMOS serial data output permits cascading of multiple devices in applications requiring add...