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Updated at 19/07/2025 10:30:15(UTC+8)

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Description

The CAT4016 is a 16 channel constant current driver for LED billboard and other general display applications. LED channel currents are programmed together via an external RSET resistor. Low output voltage operation on the LED channels as low as 0.4 V (for 2 to 100 mA LED current) allows for more power efficient designs. A high-speed 4-wire serial interface of up to 25 MHz clock frequency controls each individual channel using a shift register and latch configuration. A serial output data pin (SOUT) allows multiple devices to be cascaded and programmed via one serial interface. The device also includes a blanking control pin (BLANK) that can be used to disable all channels independently of the interface. Thermal shutdown protection is incorporated in the device to disable the LED outputs if the die temperature exceeds a set limit.
Features
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16 Constant current-sink channels
Serial interface up to 25 MHz clock frequency
3 V to 5.5 V logic supply
LED current range from 2 mA to 100 mA
LED current set by external RSET resistor
300 mV LED dropout at 30 mA
Thermal shutdown protection

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