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SC620 датащи(PDF) 12 Page - Semtech Corporation |
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SC620 датащи(HTML) 12 Page - Semtech Corporation |
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12 / 18 page ![]() SC620 12 Backlighting Three LEDs of Any Color Combination Plus Lens Voice Coil Drive and One GPO This example uses the SC620 to drive 3 backlight LEDs, plus a voice coil actuator for lens auto-focus and one open-drain digital output. Independent outputs allow these functions to be supported simultaneously. The V IN supply is typically single cell Li-Ion or 5.0V. V IN and the LED anode voltage may be supplied by different sources. The operating voltage limit of (V IN - 1.5V) at the sink pins must be observed to achieve the specified accuracy of the device. SC620 IN 2 SCL 11 SDA 10 EN 3 GND 1 GND 4 GND 9 GND 12 ILED1 5 ILED2 6 ILED3 7 ILED4 8 ILED6 14 ILED8 16 ILED5 13 VLOGIC 1μF SCL SDA EN Main Panel LED Backlighting Lens Focusing VBAT = 2.7V to 5.5V VBAT Voice Coil ILED7 15 GPO Digital Output Expander Applications Information (continued) |
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