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DM13H Scheda tecnica(PDF) 10 Page - Silicon Touch Technology Inc. |
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DM13H Scheda tecnica(HTML) 10 Page - Silicon Touch Technology Inc. |
10 / 26 page 16-Channel Constant Current LED Driver with Error Detection Version:A.004 Page 9 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. DM13H 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 3mA to 90mA. The reference voltage of REXT terminal (Vrext) is approximately 1.23V. The output current value is calculated by the following equation: 0 10 20 30 40 50 60 70 80 90 12 345 678 9 10 Rext (K) 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 below. 0 10 20 30 40 50 60 70 80 90 100 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 VOUT(V) Iout (mA) ~ V rext (V) Rrext (KΩ) × 65 |
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