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