16 channel constant current LED driver with pre-charge FET

The TLC59283 is a 16-channel,

constant-current sink light-emitting diode (LED) driver. Each channel can be

individually controlled with a simple serial communications protocol that is

compatible with 3.3V or 5V CMOS logic levels, depending on the operating VCC. When

the serial data buffer is loaded, a LAT rising edge transfers the data to the

OUTn outputs. The BLANK pin can be used to turn off all OUTn

outputs during power-on and output data latching to prevent unwanted image displays

during these times. The constant-current value of all 16 channels is set by a single

external resistor.

Each constant-current output has a

pre-charge field-effect transistor (FET) that can reduce ghosting on the

multiplexing (dynamic) drive LED display. Multiple TLC59283s can be cascaded

together to control additional LEDs from the same processor.