Features
• Input Voltage VDD: 3V to 5.5V
• Output Current Range
• 2~55mA/5V, 2~35mA/3.3V
• ±0.1% Output current regulation capability
• 6-bit global current control: from 12.5% to 200%
• 16 Constant-Current Sink Output Channel
• 16-bit grayscale resolution with Adaptive Pulse Density
Modulation control
• 15V rated output channels for long LED strings
• Fast Transient Response – supports external grayscale
clock with double edge up to 16MHz
• ±1.5% (typ.) LED Current accuracy between channels
• ±3% (typ.) LED Current accuracy between chips
• Non-scramble waveform for high power LED application
• Grayscale counter reset selection
• Grayscale data synchronization selection
• Diagnosis and Protections
• Error detection includes LED Open, LED Short, Output port
leakage, Output short-to-GND, Output short-to-Power and
REXT short-to-GND
• Error detection LEDs on at 0.1mA to avoid any flickering
• Short detection threshold voltage selection (2/3/4/4.5V)
• Sleep and 0-data mode to lower down the supply current
• Pre-overtemperature warning
• 4-Wire Serial Interface (LAT, DI, DO, DCK)
• 25MHz clock frequency for data transfer
• EMI reduction grayscale clock
• Cascaded capability (Max 1,440 devices)
• External GCK watchdog
• Stagger outputs delay for EMI reduction
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• An automotive-compliant part is available under a separate
datasheet (AL58263Q).

Applications
• Indoor and outdoor LED video displays
• Variable message signs (VMS)
• Traffic signs
• Outdoor billboard signage
• LCD display backlighting