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| Princeton Technology Corp. 12 Bits Shift Register Latched Constant Current Driver IC Tel: 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6956 DESCRIPTION PT6956 is a 12 bits shift register latched constant current driver IC utilizing CMOS Technology used to unify the luminance of the LED panel. It is equipped with serial I/O interface for multiple chips, cascading and serial input, parallel output for LED Interface. Pin assignments and application circuits are optimized for easy PCB layout and cost saving advantages. FEATURES * * * * * CMOS Technology Serial I/O, Parallel Output Interface Constant Current Output (adjustable by external resistor for 50mA max.) Cascade Extension Available in 20 - pin, SO Package APPLICATION * LED Panel Driver PT6956 v1.1 1 Updated Nov. 2000 Princeton Technology Corp. 12 Bits Shift Register Latched Constant Current Driver IC Tel: 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6956 PIN CONFIGURATION DGND SIN CLK STB Q0 Q1 Q2 Q3 Q4 Q5 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC RC SOUT Q11 Q10 Q9 Q8 Q7 Q6 PGND PT6956 v1.1 2 Updated Nov. 2000 Princeton Technology Corp. 12 Bits Shift Register Latched Constant Current Driver IC Tel: 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6956 APPLICATION CIRCUIT 1 SOUT 18 PTXXXX SIN 2 DQ CP DQ CP DQ CP DQ CP DQ CP 20 5V VCC 1 CLK 3 DGND STB 4 L D Q L D Q L D Q L D Q L D Q 11 PGND Current Setting 19 RC GND LED 5V 5 6 7 8 17 Q0 Q1 LED Q2 LED Q3 LED LED Q11 LED INPUT GND LED PT6956 v1.1 3 Updated Nov. 2000 |
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