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DM13C Arkusz danych(PDF) 11 Page - Silicon Touch Technology Inc. |
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DM13C Arkusz danych(HTML) 11 Page - Silicon Touch Technology Inc. |
11 / 27 page 16-bit Constant Current LED Driver with Error Detection Version:A.006 Page 10 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. DM13C Constant-Current Output Constant-current value of each output channel is set by an external resistor connected between the REXT pin and GND. Varying the resistor value can adjust the current scale ranging from 5mA to 90mA. The reference voltage of REXT terminal (Vrext) is approximately 1.2V. The output current value is calculated roughly by the following equation: Iout(mA) 5 10 20 30 40 50 60 70 80 90 M 46.4 45.9 45 44.5 44.2 44.3 44.9 43.7 42.3 42.7 Output Current as a Function of Rrext Value 0 10 20 30 40 50 60 70 80 90 100 0 1 2 3 4 5 6 7 8 9 10 11 12 Rrext(KOhm) Output Current as a Function of Output Voltage 0 10 20 30 40 50 60 70 80 90 100 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 Vout (V) In order to obtain a good performance of constant-current output, a suitable output voltage is necessary. Users can get related information about the minimum output voltage above. Iout (mA) ~ Vrext (V) Rrext (K Ω ) × M |
Podobny numer części - DM13C |
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Podobny opis - DM13C |
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