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CL325 датащи(PDF) 6 Page - Supertex, Inc |
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CL325 датащи(HTML) 6 Page - Supertex, Inc |
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6 / 7 page ![]() 6 CL325 ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com Lowering CL325 Power Dissipation: Zener Diode EN1 EN2 EN3 OUT1 OUT2 OUT3 GND VDD CL325 REG VIN Host Controller 1 2 3 8 7 6 5 4 VLL ZDROP VZ < (VLL(MIN) - 6.5V) where: VZ = Zener Voltage VLL(MIN) = minimum supply voltage CIN 100nF Pin Description Pin # Name Description 1 EN1 Output enable, active low. 2 EN2 3 EN3 4 GND Circuit common. 5 OUT3 Constant current output (sinking). Connect the cathodes of the LEDs to these pins. 6 OUT2 7 OUT1 8 VIN Supply voltage. 6.5V to 90V. Bypass locally with a 100nF capacitor to ground. Underside Plate GND The exposed underside plate is internally connected to the GND pin. The plate may either be left floating or connected to ground. Solder the plate to an exposed copper area on the PCB for heatsinking purposes (see recommended layout). |
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