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DM412 Datasheet(PDF) 2 Page - Silicon Touch Technology Inc. |
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DM412 Datasheet(HTML) 2 Page - Silicon Touch Technology Inc. |
2 / 35 page 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC . 3-CHANNEL CONSTANT CURRENT LED DRIVERS Version:A.003 Page 1 未經授權而逕予重製、複製、使用或公開本文件,行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. DM412 DM412 3-CHANNEL CONSTANT CURRENT LED DRIVERS WITH LED OPEN DETECTION General Description DM412 is a PWM enabled LED driver specifically designed for LED video display or lighting applications. Each channel has linear adjustable 16-bits (65536 steps) grayscale PWM control current outputs. It incorporates shift registers, data latches, 3-channel constant current circuitry with current value set by 3 external resistors, and built-in oscillator for PWM functioning. Data, clock, and latch buffer outputs are designed for cascading another chip. Its built-in open detection function help users locate LED failures without additional circuits. The output polarity reverse function is designed for more high power LED applications. Features Maximum constant current outputs: 200mA determined by three external resistors Maximum sinking output voltage: 17V Maximum serial-in clock frequency: 20 MHz 16-bit linear PWM control current outputs Built-in buffers for cascading clock, data, and strobe to next driver PWM free-running capability (refresh rate (~ 267 Hz) with internal oscillator (~ 17.5 MHz)) Selectable auto/manual strobe (Patent pending) LED open detection Output polarity reverse function Power supply voltage: 4V ~ 5.5V Applications LED Decorative Lighting Indoor/Outdoor LED Video or Message Display PWM Signal Generator Package SSOP16, SOP16 (with exposed pad), TSSOP16 (with exposed pad), QFN16 (with exposed pad) |
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