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TLC5928PW Datasheet(PDF) 7 Page - Texas Instruments |
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TLC5928PW Datasheet(HTML) 7 Page - Texas Instruments |
7 / 27 page TLC5928 www.ti.com ................................................................................................................................................. SBVS120A – JULY 2008 – REVISED SEPTEMBER 2008 TERMINAL FUNCTIONS TERMINAL DBQ/PW/ NAME PWP RGE I/O DESCRIPTION Serial data input for driver on/off control. When SIN = high level, data '1' are written into LSB SIN 2 23 I of the on/off control shift register at the rising edge of SCLK. Serial data shift clock. Schmitt buffer input. All data in the on/off control shift register are SCLK 3 24 I shifted toward the MSB by 1-bit synchronization of SCLK. A rising edge on SCLK is allowed 100 ns after a rising edge of LAT. Edge triggered latch. The data in the on/off control data shift register are transferred to the on/off control data latch at this rising edge. At the same time, the data in the on/off control shift LAT 4 1 I register are replaced with LED open detection (LOD) and pre-thermal warning (PTW) data. LAT must be toggled only once after the shift data are updated to avoid the on/off control latch data being replaced with LOD and PTW data in the shift register. Blank, all outputs. When BLANK = high level, all constant current outputs (OUT0–OUT15) are forced off. When BLANK = low level, all constant current outputs are controlled by the on/off BLANK 21 18 I control data in the data latch. LOD and PTW data are latched into the SID data latch at the rising edge of BLANK and are present at the output of the SID data latch when BLANK is low. Constant current value setting, OUT0–OUT15 sink constant current is set to desired value by IREF 23 20 I/O connection to an external resistor between IREF and GND. Serial data output. This output is connected to the MSB of the on/off data shift register. SOUT SOUT 22 19 O data changes at the rising edge of SCLK. Constant current output. Each output can be tied together with others to increase the constant OUT0 5 2 O current. Different voltages can be applied to each output. OUT1 6 3 O Constant current output OUT2 7 4 O Constant current output OUT3 8 5 O Constant current output OUT4 9 6 O Constant current output OUT5 10 7 O Constant current output OUT6 11 8 O Constant current output OUT7 12 9 O Constant current output OUT8 13 10 O Constant current output OUT9 14 11 O Constant current output OUT10 15 12 O Constant current output OUT11 16 13 O Constant current output OUT12 17 14 O Constant current output OUT13 18 15 O Constant current output OUT14 19 16 O Constant current output OUT15 20 17 O Constant current output VCC 24 21 — Power-supply voltage GND 1 22 — Power ground Copyright © 2008, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Link(s): TLC5928 |
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