TLC59281

TLC59281 www.ti.com SBVS139B – JANUARY 2010 – REVISED JANUARY 2011 16-Channel, Constant-Current LED Driver Check for Samples: TLC59281 FEATURES 1 2 16 Channels, Constant-Current Sink Output with On/Off Control 35-mA Capability (Constant-Current Sink) 10-ns High-Speed Constant-Current Switching Transient Time Low On-Time Error LED Power-Supply Voltage up to 17 V VCC = 3.0 V to 5.5 V Constant-Current Accuracy: – Channel-to-Channel = ±1% – Device-to-Device = ±1% CMOS Logic Level I/O 35-MHz Data Transfer Rate 20-ns BLANK Pulse Width Operating Temperature: –40°C to +85°C APPLICATIONS LED Video Displays Message Boards Illumination DESCRIPTION The TLC59281 is a 16-channel, constant-current sink LED driver. Each channel can be turned on/off by writing serial data to an internal register. The constant-current value of all 16 channels is set by a single external resistor. VLED VLED ¼ ¼ VLED VLED ¼ Controller DATA SCLK LAT BLANK ERROR READ RIREF ¼¼ ¼OUT0 OUT15 SIN SCLK SOUT VCC LAT BLANK TLC59281 IREF IC1 VCC GND RIREF ¼ ¼OUT0 OUT15 SIN SCLK SOUT VCC LAT BLANK VCC IREF ICn GND 3 Typical Application Circuit (Multiple Daisy-Chained TLC59281s) 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. 2 PRODU...