TLC59284

TLC59284 www.ti.com SBVS208A – OCTOBER 2012 – REVISED OCTOBER 2012 16-Channel, Constant-Current LED Driver with Switching Delay Check for Samples: TLC59284 FEATURES 1 2 16-Channel, Constant-Current Sink Output with On and Off Control Constant-Current Sink Capability: – 35 mA (VCC ≤ 3.6 V) – 45 mA (VCC > 3.6 V) LED Power-Supply Voltage: Up to 10 V VCC: 3 V to 5.5 V Constant-Current Accuracy: – Channel-to-Channel: ±1.4% (typ), ±3% (max) – Device-to-Device: ±2% (typ), ±4% (max) CMOS Logic Level I/O Data Transfer Rate: 35 MHz BLANK Pulse Width: 50 ns Switching Delay for Noise Reduction Operating Temperature: –40°C to +85°C APPLICATIONS Video Displays Message Boards DESCRIPTION The TLC59284 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 3.3-V or 5-V 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. VLED ¼¼ ¼ Controller DATA SCLK LAT BLANK RIREF ¼¼ ¼OUT0 OUT15 SIN SCLK SOUT VCC LAT BLANK VCC IREF GND Device 1 RIREF ¼ ¼OUT0 OUT15 SIN SCLK SOUT VCC LAT BLANK VCC IREF ...