AL5826316-CHANNEL, 16-BIT GRAYSCALE PWM DIMMING LED DRIVERDescriptionPin Assignments The AL58263 is a 16-channel constant-current LED driver with 16-bit grayscale Adaptive Pulse Density Modulation (APDM) and supports (3D Photo – Not to Scale) error diagnostics, power-saving functionality, and current gain control. This distinctive APDM technology abates the non-ideal IOUT distortion due to non-symmetric transient responses and enhances the refresh rate by efficiently separating the frame waveform. The device operates over a 3V to 5.5V input voltage range, 15V output channel voltage, fast 25MHz DCK input, and delivers up to (3D Step file available upon request) 55mA of high-accuracy current to each LED string. Each channel’s output current can be programmable through a digital interface (Top View – Not to Scale) individually. All channels’ output current can be set by one external
sensing resistor, along with a 6-bit global current control register. GND 1 24 VDD The AL58263 has built-in diagnostics and LED open/short protection, DI 2 23 REXT including error detection. These error results are stored in a register DCK 3 22 DO for the MCU to read out. LAT 4 21 GCK The AL58263 is available in the TSSOP-24EP (Type A1-B) package OUT0 5 20 OUT15 AL58263 and specified over the -40°C to +85°C ambient temperature range. OUT1 6 Thermal 19 OUT14 Exposed OUT2 7 18 OUT13 Pad Features OUT3 8 17 OUT12 OUT4 9 16 OUT11 • Input Voltage VDD: 3V to 5.5V OUT5 10 15 OUT10 • Output Current Range OUT6 11 14 OUT9 • 2~55mA/5V, 2~35mA/3.3V OUT7 12 13 OUT8 • ±0.1% Output current regulation capability • 6-bit global current control: from 12.5% to 200%
• 16 Constant-Current Sink Output Channel TSSOP-24EP (Type A1-B) • 16-bit grayscale resolution with Adaptive Pulse Density