The document summarizes LED driver products from austriamicrosystems, including their applications and key features. It describes several LED driver ICs for applications such as lighting, backlighting, and seven-segment displays. Products like the AS3691 provide high current driving for RGB applications while the AS1101 is suited for backlighting. The AS1100 family controls up to 64 LEDs for dot matrix displays.

1. LED Drivers a leap ahead Welcome to austriamicrosystems and Sagitrón Workshop Giovanni Benzoni Bernhard Niessen April 2007

2. Standard Linear - Segments

3. Available LED Drivers for Lighting & Backlighting AS3691-2 AS1101-2-3-4 feedback Feedback to DCDC converter to control the LED-supply to minimize power dissipation and improve efficiency < Patent pending > DC/DC BUS INTERFACE LED DRIVER & CONTROL AS3681-2-3

4. LED Drivers Product Overview LED Current 400 mA 100 mA 60 mA 40 mA AS3691 AS1109 AS1105 AS1108 Key Applications High current RGB Appl. Illumination B/W + Basic Color Full Mux B/W Backlighting 2 3 4 ch 8 ch 16ch 32 ch 64 ch LEDs AS1101 AS1100 AS1106/07 AS1110 AS1102 AS1103-4 AS368x

5. Lighting AS3681 - Serial Configuration LDO 1.85-3.4V 100mA Bandgap & Vref Charge Pump 1:1, 1,5:1, 2:1 400mA Serial I/F Battery Battery 2.8V 2.2µF feedback MAIN DISPLAY Camera Flash + Strobe DC/DC Step up Current Sinks 2.5-37.5mA GPIO_0 GPIO_1 GPIO_2 GPIO_3 0,30hm 10µH 2.2µF 10bit ADC Control Current Sinks 2.5-37.5mA Current Sinks 10 - 300mA SUB DISPLAY RGB Funlight CP_Out or Vbat Ambient Light Camera Module STROBE Baseband PWM I2C INT

6. Lighting AS3681 - CCD Configuration LDO 1.85-3.4V 100mA Bandgap & Vref Battery VBAT VANA 2.8V 2.2µF High Power Current Sinks 10 - 150mA or 20 to 300mA per source Battery SENSE_N SENSE_P 31 32 29 DCDC_GATE feedback DC/DC Step up 30 DCDC_GATE 0,30hm 10µH Charge Pump 1:1, 1.5:1, 2:1 400mA GPIO_0 GPIO_1 GPIO_2 GPIO_3 10bit ADC Ambient Light CCD Module VBat -8V Regulator Serial I/F Control +15V/25mA -8V/25mA Main Display Flash / Torch Sub Display -8V to -12V 25mA Current Sinks 2.5- 37.5mA

7. Lighting AS3681 - Parallel Configuration Example LDO 1.85-3.4V 100mA Bandgap & Vref Charge Pump 1:1, 1,5:1, 2:1 400mA Battery VBAT VANA 2.8V 2.2µF GPIO_0 GPIO_1 GPIO_2 GPIO_3 10bit ADC Control High Power Current Sinks 10 - 150mA or 20 to 300mA per source Ambient Light Current Sinks 2.5- 37.5mA Main Display RGB Funlight Flash / Torch Sub Display Baseband Serial I/F PWM INT

8. LED Drivers Product Overview LED Current 400 mA 100 mA 60 mA 40 mA AS3691 AS1109 AS1105 AS1108 Key Applications High current RGB Appl. Illumination B/W + Basic Color Full Mux B/W Backlighting 2 3 4 ch 8 ch 16ch 32 ch 64 ch LEDs AS1101 AS1100 AS1106/07 AS1110 AS1102 AS1103-4 AS368x

10. LED Drivers Product Overview AS3681 LED Current 400 mA 100 mA 60 mA 40 mA AS3691 AS1109 AS1105 AS1108 Key Applications High current RGB Appl. Illumination B/W + Basic Color Full Mux B/W Backlighting 2 3 4 ch 8 ch 16ch 32 ch 64 ch LEDs AS1101 AS1100 AS1106/07 AS1110 AS1102 AS1103-4

12. AS3691 – LED Driver with Autoadaptive Operation Key Features - 4 x 400mA constant current outputs - Current Programmable with external resistors - 4 independent PWM inputs - Absolute current accuracy +/-0,5 - Automatic Supply Regulation to reduce dissipation - Wide output Voltage (0,41V up to 15V) - Integrated overtemperature protection - Small Package with High Temperature performances Applications - General Lighting - Backlighting - RGB Backlighting for LCD TV/Monitors with White Color Balancing Patent Pending From Battery

13. AS3691 – RGB LED driver in parallel configuration

16. AS3691 - LCD TV Backlight Concept SubModule Description: - 37” TV Set - RGGB Aproach - Multiple Submodules - Linear Regulator - ~13000cd/m2 BL - ~650cd/m2 LCD - LED Currents: 150mA to 400mA

18. Available LED Drivers for Panels DC/DC ROW CONTROL BUS INTERFACE LED DRIVER & CONTROL AS1100-5-6-7-8 AS11O9 AS1110

19. LED Drivers Product Overview AS3681 LED Current 400 mA 100 mA 60 mA 40 mA AS3691 AS1109 AS1105 AS1108 Key Applications High current RGB Appl. Illumination B/W + Basic Color Full Mux B/W Backlighting 2 3 4 ch 8 ch 16ch 32 ch 64 ch LEDs AS1101 AS1100 AS1106/07 AS1110 AS1102 AS1103-4

22. LED Drivers Product Overview AS3681 LED Current 400 mA 100 mA 60 mA 40 mA AS3691 AS1109 AS1105 AS1108 Key Applications High current RGB Appl. Illumination B/W + Basic Color Full Mux B/W Backlighting 2 3 4 ch 8 ch 16ch 32 ch 64 ch LEDs AS1101 AS1100 AS1106/07 AS1110 AS1102 AS1103-4

23. AS11O9: 8 ch. LED constant current Drivers with full Diagnostic OE LD SDI SCK Latch Error Status Latch Data Out Load Error Status

24. AS11O9: TOS Diagnostic OE LD SDI SCK SDO Latch Error Status Latch Data Out Load Error Status T O S Lct Sby

26. AS11O9 Application: LED + Switch + Rotary Switch VDD DI OEn LD CK DO GND +VDD +VDD +VDD +VDD Only LED LED and Switches Only Switches Rotary switch AS1109 AS1109 +VDD +VDD

27. AS11O9 Application: 8x32 Multiplexed Display Panel + VLED DI OEn LD CK DO

28. Roadmap: LED drivers for Panels AS1112 AS1110 AS1109 AS1100/06/07 AS1105/08 AS1101/2/3/4 Dot Matrix LED 2006 Q1-07 Q2-07 Q4-06 Backlighting Full color Video Large LED Panels

29. AS1109 - 8 ch. LED constant current driver + TOS IN PRODUCTION

30. AS1110 - 16 ch. LED constant current driver + TOS NOW IN PRODUCTION

32. Thank you for your attention! strictly confidential copyright ©2006 austriamicrosystems AG focused on speed, value and quality