austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems datasheet is still valid. Contact information: Headquarters: ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 e-Mail: ams sales ams.com Please visit our website at www.ams.com Datasheet AS1113 50mA, 16-Channel LED Driver with Diagnostics 1 General Description 2 Key Features 16 Constant-Current Output Channels The AS1113 is designed to drive up to 16 LEDs through a fast serial interface and features 16 output constant Excellent Output Current Accuracy current drivers and an on-chip diagnostic read-back - Between Channels: <3% function. - Between Devices: <6% The high clock-frequency (up to 50MHz), adjustable out- put current, and flexible serial interface makes the Output Current Per Channel: 0.5 to 50mA device perfectly suited for high-volume transmission Controlled In-Rush Current applications. Over-Temperature, Open-LED, Shorted-LED Output current is adjustable (up to 50mA/channel) using Diagnostic Functions an external resistor (REXT). The serial interface with Schmitt trigger inputs includes Low-Current Test Mode an integrated shift register. Additionally, an internal data Global Fault Monitoring register stores the currently displayed data. The device features integrated diagnostics for over- Low Shutdown Mode Current: 10A temperature, open-LED, and shorted-LED conditions. Fast Serial Interface: 50MHz Integrated registers store global fault status information during load as well as the detailed temperature/open- Cascaded Configuration LED/shorted-LED diagnostics results. Extremely Fast Output Drivers Suitable for PWM The AS1113 also features a low-current diagnostic mode to minimize display flicker during fault testing. 24-pin SSOP and 28-pin QFN (5x5mm) Package The AS1113 is available in a 24-pin SSOP and the 28- pin QFN (5x5mm) package. 3 Applications If a higher output current is needed, please see the AS1110 with 100mA drive capability. The device is ideal for fixed- or slow-rolling displays using static or multiplexed LED matrix and dimming functions, large LED matrix displays, mixed LED display and switch monitoring, displays in elevators, public transports (underground, trains, buses, taxis, airplanes, etc.), large displays in stadiums and public areas, price indicators in retail stores, promotional panels, bar-graph displays, industrial controller displays, white good pan- els, emergency light indicators, and traffic signs. Figure 1. Main Diagram and Pin Assignments +VLED AS1113 SDI SDO CLK LD OEN REXT GND VDD www.austriamicrosystems.com/LED-Driver-ICs/AS1113 Revision 1.04 1 - 24 ams AG Technical content still valid OUTN0 OUTN1 OUTN2 OUTN3 OUTN4 OUTN5 OUTN6 OUTN7 OUTN8 OUTN9 OUTN10 OUTN11 OUTN12 OUTN13 OUTN14 OUTN15