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CL1 is a high voltage, temperature compensated, constant current source. The device is trimmed to provide a constant current of 20mA±5% at an input voltage of 45V. No external components are required. The device can be used as a two terminal constant current source or constant current sink. A typical application for the CL1 is to drive LEDs with a constant current of 20mA. Multiple CL1s can also be used in parallel to provide higher currents such as 40mA, 60mA or 80mA. The device is available in a SOT-89 package.
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