ST2226A Datasheet | SiTi

Description The ST2226A is a LED driver incorporating shift registers, data latches, 16-channel constant current circuitry with current value set by an external resistor, 1024 gray level PWM (Pulse Width Modulation) functional unit and time division capability. Each channel can provide a maximum current of 60 m A. Time division operation allows driving up to 1 or 2 LEDs with a single output channel (mode-1 and mode-2 respectively). Block Diagram IOUT0 …… IOUT15 Rext Voltage Reference Driver (16-Channel) GCLK PWM Counter parator (16-Channel) CMD[2:0] Operation Control Shift Register and Latch (10 Bit ｘ 16-Channel ｘ 2LED) DCLK DIN DOUT Figure 1. Functional block diagram Version：A.010 Page：1 .. 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. Features ˙ ˙ ˙ ˙ ˙ ˙ Constant current outputs with current value settings by an external resistor Maximum output current: 60 m A Time division output allows the driving of 1 or 2 LEDs with a single output Maximum / minimum output voltage: 10V / 1.25V 10 bits luminance data with PWM current outputs Serial shift-in architecture for luminance data in time division Mode 1 and Mode 2 Absolute Maximum Ratings Supply Voltage (AVDD, DVDD) Input Voltage Range (VIN) Driver Output Voltage Range (VOUT) Driver Output Current (IOUT) Power Dissipation (Ta = 50 ℃or less) Thermal Resistance (Θja) Operating temperature range (Top) Storage temperature range (Tstg) -0.3 to 6 -0.3 to DVDD+0.3 -0.3 to 10 0 to 60 2.50, SDIP28 1.32, SOP28 2.92, QFN32 40.0, SDIP28 75.9, SOP28 34.2, QFN32 -40 to 85 -55 to 150 V V V m A W ℃ /W ℃ ℃ Version：A.010 Page：2 .. 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. Pin Connection (SDIP28 / SOP28 Top View) Pin Assignment (SDIP28 / SOP28) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 NAME IOUT2 IOUT3 IOUT4 IOUT5 IOUT6 IOUT7 IGND IGND IOUT8 IOUT9 IOUT10 IOUT11 IOUT12 IOUT13 Pin No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 NAME IOUT14 IOUT15 GND DOUT GCLK DCLK REXT CMD[2] CMD[1]...