AL58263 16-Channel LED Driver

Diodes' AL58263 is a 16-channel constant current LED driver with 16-bit grayscale adaptive pulse density modulation (APDM). It supports error diagnostics, power-saving functions, and current gain control. This distinctive APDM technology abates non-ideal I_OUT distortion due to non-symmetric transient responses and enhances the refresh rate by efficiently separating the frame waveform. The AL58263 operates over a 3 V to 5.5 V input voltage range with a 15 V output channel voltage. A fast 25 MHz data clock (DCK) serial input delivers up to 55 mA of high-accuracy current to each string of LEDs. Each channel output current is individually programmable via a digital interface. The output currents are set by one external sensing resistor along with a 6-bit global current control register. The AL58263 has built-in diagnostics with LED-open/-short detection and protection features. Any resulting errors are stored in the image-shift register for the MCU to read. The AL58263 is available in the thermally enhanced TSSOP-24EP (Type A1-B) package.

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