Analog & Mixed Signal Products HBLED Driver Selection

DC/DC Buck DC/DC Boost AC/DC Flyback Graphical Selector Guide AC/DC Buck Constant Current

IS31LT3916 External MosFET Integrated PFC Flyback Config IS31LT3938 Higher Drive MosFET Linear/PWM/Switch Dim

<256VAC Over Temp/Cur/Volt Prot IS31LT3918 External MosFET Linear/PWM/Switch Dim Over Temp/Cur/Volt Prot IS31LT3910 External MosFET Linear/PWM Dimming Temp. Compensation IS31LT3948 External MosFET IS31LT3350 PFM/PWM Operation Integrated MosFET (750mA) OverTemp/Volt Protection VIN Linear/PWM Dimming IS31LT3352 Integrated MosFET (750mA) Linear/PWM Dimming Temp. Compensation IS31LT3360 IS31LT3505 IS32LT3117 Integrated MosFET (1.2A) Integrated MosFET (2.1A) Automotive Grade (pending) <40VDC 1Mhz Switching Thermal current regulation OverTemp Protection above 140°C IS31LT3380 Integrated MosFET (1.2A) Switch Dimming

IS31LT3354 External MosFET Linear/PWM Dimming

IS31LT3135 Integrated MosFET Main/Aux Dual Channel <6VDC

DC/DC Buck AC/DC Buck DC/DC Boost Linear Driver

Buck Converter A “buck” or “step-down” takes a higher input voltage and converts it to a lower output voltage.

Boost Converter A “boost” or “step-up”takes a lower input voltage and converts it to a higher output voltage.

Linear Driver A “linear driver” generates a fixed current that varies slightly with changes in voltage.

2 Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com DC/DC Buck IS31LT3350 40V/750mA Integrated Switch, Continuous Mode Buck Converter

Features • 750mA output current with 5% accuracy • 1MHz switching frequency with 95% efficiency • Integrated 40V power switch for decreased parts count • Single pin ON/OFF and brightness control using Linear or PWM • Typical 1200 : 1 dimming ratio • Open-circuit LED thermal shutdown protection • Supports electronic transformer input IS31LT3350 • Supports DMX512 control interface

SOT23-5 SOT89-5

Demo Boards Available • Common MR16, GU10 Lamps • Voltage doubler MR16 project • 6 output RGB decorative light • 4 output common anode RGB decorative light

Applications • MR16 LED spotlight • LED Streetlamp, wall-washer, decorative lighting • Automobile LED decorative lights

MR16, GU10 Lamp Application

Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com 3 IS31LT3360 DC/DC Buck 40V/1.2A Integrated Switch, Continuous Mode Buck Converter

Features • Up to 1.2A output current with 3% accuracy • 1MHz switching frequency with 98% efficiency • Integrated 40V power switch • Single pin on/off and brightness control using Linear or PWM • Typical 1200 : 1 dimming ratio • Open-circuit LED thermal shutdown protection • Supports electronic transformer input

IS31LT3360 • Supports DMX512 control interface

SOT89-5

Demo Boards Available • Common MR16, GU10 Lamps • Voltage doubler MR16 project • 6 output RGB decorative light • 4 output common anode RGB decorative Light

Applications • MR16 LED spotlight • LED Streetlamp, wall-washer, decorative lighting • Automobile LED decorative lights

MR16, GU10 Lamp Application

4 Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com DC/DC Buck IS31LT3352 40V/750mA Buck LED Driver with Temperature Compensation

750mA Features • Temperature Compensation protects the LED from high temperature damage • Cascadable temperature compensation • Integrated 40V power MOS • Operating Voltage range: 6V to 40V (drive up to 10 LEDs) • Output current up to 750mA (drives 3W LEDs) • up to 1200:1 dimming ratio • 5% output current accuracy • Accepts either DC or PWM dimming input signal • Up to 1MHz operating frequency SOP-8

Demo Boards Available • MR16 with Temperature Compensated LED • Street Light

Applications • MR16 LED Spotlight • Decorative LED lighting

Output Current vs Temperature • Wall Washer Lighting 400 350 300 Adjustable Temperature 250 Breakpoint 200

Iout (mA) Adjustable 150 Slope 100 50 0 0 15 30 45 60 75 90 Temperature ⁰C

Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com 5 6 Supply Current (mA) 40V/1.2A LEDDriver withSwitch Dimming IS31LT3380 *Switch ON/OFFcycles the DIMRatio Feb. 2013 Floating Floating DIM1 GND GND Floating Floating DIM2 GND GND 1940 ZankerRd., SanJose,CA.95112 • Tel: 408.969.6600•Support: [email protected]•www.issi.com SOP-8 100%-60%-30% 100%-50%-20% DIM LEVELS* No Dimming 100%-30% • • • • Applications • • • • Demo Boards Available Features • • • • • • LED back-up lighting, wall washers Low voltage industrial floodlamps lighting, PAR LEDbulb Low voltage halogen replacement LEDs(MR16) Lighting 4 Channel,CommonAnodeRGB Decorative RGB Decorative Lighting with6outputs MR16 withVoltage Doubler MR16 withMultiple Power OutputLevels Open-circuit LEDthermalshutdown protection and fixtures Use ordinary power switch withexisting wiring Multi-modes switch dimming parts count Integrated 40Vpower switch for decreased 1MHz switching frequency with98%efficiency Up to 1.2Aoutputcurrent with5%accuracy DC/DC Buck DC/DC Buck IS31LT3354 40V/LED Driver with External Switch

Features

2A • Up to 2A output current with 3% accuracy • Output current only limited by external com- ponent selection • 1MHz switching frequency with 98% efficiency • Typical 1200 : 1 dimming ratio • Open-circuit LED thermal shutdown protection • Single pin ON/OFF and brightness control using DC voltage or PWM

SOT23-5

Demo Boards Available • High Power MR16 • High Current LED Lamp

Applications • Low voltage halogen replacement LEDs (MR16) • PAR LED bulb • Low voltage industrial lighting, floodlamps • LED back-up lighting, wall washers

Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com 7 IS31LT3948 DC/DC Boost PFM Mode Boost LED Driver with External NMOS for High Power Applications

Features • Wide input voltage range: 5V-100V • Constant Current Output limited only by exter- nal component selection (Note) • Automatically adjust boost output for constant Load current • No loop compensation required • Up to 1MHz Switching Frequency Efficiency up to 90% • Internal over-voltage protection • Internal over-temperature protection • Operating temperature range -40°C to 85°C SOP-8

Demo Boards Available • General Purpose Boost Demo Board

Applications • Street Lighting • MR16 • LED back-up lighting, wall washers • TV Monitor Backlight • Notebook • Automotive

Street Lamp Application

8 Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com DC/DC Boost IS31LT3505 1.0Mhz Boost Converter with 35V Internal NMOS for Medium Power Applications

1A Features • 6V to 30V supply voltage • Boost output up to 35V • Output current up to 1A • PWM dimming control • 1MHz switching frequency with 90% efficiency • Integrated 35V power switch • Internal soft start • Open-circuit LED thermal shutdown protection

MSOP-10

Demo Boards Available • General Purpose Boost Demo Board

Applications • TV Monitor Backlight • PDA, Notebook • GPS Receiver

Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com 9 IS31LT3910 AC/DC Buck Universal High Brightness LED Driver with Temp Compensation

Features • Up to 1A output current with 5% accuracy • 1MHz switching frequency with 90% efficiency • Temperature compensation to regulate LED current • Single pin on/off and brightness control using Linear or PWM • Typical 1200 : 1 dimming ratio • Open-circuit LED thermal shutdown protection • Non-isolated Design

SOP-8

Output Current vs Temperature 400 350 Demo Boards Available 300 Adjustable • Single Voltage input, 220V, 24x12 LED (T8) Temperature 250 Breakpoint (EMI-passed) 200 • Full Voltage range input, 24x12 LED (T8) Iout (mA) 150 Adjustable Slope (EMI-passed) 100

50 0 0 15 30 45 60 75 90 Applications Temperature ⁰C • DC/DC or AC/DC constant current driver • RGB Backlight • Fluorescent Tube (T8/T5) replacement • Signal Lamp • Decorative Lighting

10 Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com AC/DC Buck IS31LT3918 High Voltage LED Driver with Switch Dimming

Features

1A • Wide input range from 6VDC to 450DC or 85VAC to 265VAC • 92% efficiency with 1% output current accuracy • Linear, PWM or switch dimming capability • Use ordinary power switch with existing wiring and fixtures • Over current, voltage and temp protection • Requires few external components • Non-isolated Design

SOP-8

Demo Boards Available • Single Voltage input, 220V, 24x12 LED (T8) DIM1 DIM2 DIM LEVELS* (3-Power Levels) Floating Floating No Dimming • Full Voltage range input, 24x12 LED (T8) Floating GND 2 levels: 100%-30%-100% (3-Power Levels) GND Floating 2 levels: 100%-50%-100% • Full Voltage Range Input, Bulb Replacement GND GND 3 levels: 100%-50%-20%-100% (3-Power Levels) *Switch ON/OFF cycles the DIM Ratio Applications • DC/DC or AC/DC LED driver applications • General purpose constant current source • Signal and decorative LED lighting • Backlighting LED driver

Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com 11 IS31LT3938 AC/DC Buck High Voltage LED Driver with Three Level Power Sequencing

Features • User configurable power sequencing levels • 3% output current accuracy • Over current, temperature protection and short circuit Protection • High efficiency (typical up to 95%) • Higher MOS drive voltage • Wide input voltage range: 10VDC~450VDC or 85Vac~ 265Vac • Linear and PWM dimming • Multi-modes switch dimming • Use ordinary power switch with existing wiring SOP-8 and fixtures • Very few external components

DIM1 DIM2 DIM LEVELS* Floating Floating No Dimming Floating GND 100%-30%-100% GND Floating 100%-50%-100% Applications GND GND 100%-50%-20%-100% • DC/DC or AC/DC LED driver applications • General purpose constant current source *Switch ON/OFF cycles the DIM Ratio • Signal and decorative LED lighting • Backlighting LED driver

12 Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com AC/DC Buck IS31LT3916 Flyback Configuration Isolated LED Driver with Integrated PFC

Features • Active Power Factor Correction to > 0.95 • 3% typical current accuracy up to 1A • No loop compensation required • Wide input voltage range: 85V to 265VAC • Isolated and non-isolated design • Internal over-temperature protection • Primary side OCP • Overvoltage Protection

SOP-8

Applications • Isolated LED driver • Tube/Bulb Replacement • Signal Lamp • Decoration Lighting Demo Boards Available • Isolated T5/T8 • Isolated bulb replacement

Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com 13 IS31LT3135 Linear Driver Main/Aux Dual Channel LED Driver with Automatic Switchover

Features • Optimized for battery powered & Mining lamp applications • Input voltage range: 2.7V~5.5V • Intelligent Battery undervoltage detect • Sparkless Manual or Auto switch from Main to Aux LED • Over-temperature and short circuit protection • Main/Aux channel current set by external resistors • Main/Aux channel dropout voltage 100mV @ 200mA SOP-8 • Low IC quiescent current less than 300uA

350 348 346 344 Applications 342 340 • Miner Lamp 338 Imain (mA) • General LED Lighting 336 • Head Lamp 334 332 330 4 4. 2 4. 4 4. 6 4. 8 5 5. 2 5. 4 Demo Boards Available V (V) DC • LED Mining Lamp Main LED current change with power supply

Miner LED Lamp

14 Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com Ordering Information

Product Selector Guide Switching Part No. Driver VDD (V) IOUT Effcy Power Typical Package Key Feature Status Accuracy (%) Transistor Applications IS31LT3350 DC/DC 6-40 750mA 95 Built-in Low voltage LED SOT23-5, Single pin ON/OFF or brightness Prod Buck ±5% lighting, MR16 SOT89-5, control with DC/PWM, thermal replacement SOP-8 shutdown IS31LT3352 DC/DC 6-40 750mA 95 Built-in Low voltage LED SOP-8 Cascadable, temp. compensation Prod Buck ±5% lighting, MR16 and one pin ON/OFF/dimming replacement control IS31LT3354 DC/DC 6-40 - 98 External Low volt. LED light- SOT23-5 1200:1 dimming ratio LED driver Prod Buck ±3% ing, Illuminated sign with thermal shutdown protection IS31LT3360 DC/DC 6-40 1.2A 98 Built-in MR16, MR11 spot SOT89-5 High efficiency with open/short Prod Buck ±3% light, PAR light and thermal shutdown protection IS31LT3380 DC/DC 8.5-40 1.2A 98 Built-in MR16, MR11 spot SOP-8 3-level switch dimming control, Prod Buck ±5% light, PAR light open/short and thermal shutdown protection IS31LT3505 DC/DC 6-30 24W 90 Built-in Battery powered MSOP-10 1MHz Boost Converter with 35V Prod Boost ±5% LED, solar light Internal NMOS IS31LT3515 DC/DC 6-40 ±3% 90 External MR16, MR11 spot QFN-16 40V Buck/Boost converter, 3% ac- S=Q3/13 Buck/ light, PAR light curate w/TRIAC Dimming support for Boost compatible E-XFMR IS31LT3948 DC/DC 5-100 90 External Street lamp, LED SOP-8 Wide input voltage range, over- Prod Boost lighting, Gen. illum. voltage/temperature protection IS31LT3910 AC/DC 8-450 DC 500mA 90 External T8, PAR light SOP-8 Non-isolation, linear/PWM dim- Prod Driver 110/220 AC ±7% ming, temperature compensation IS31LT3916 Flyback 6-450 DC - 85 External T8, Bulb Replace- MSOP-8 Isolated and non-isolated Off-Line S=Q1/13 Buck/ 85-265 AC ±3% ment, spot light, Converter with active PFC Boost PAR light IS31LT3918 AC/DC 6-450 DC - 95 External LED Lighting; Signal SOP-8 High voltage LED driver with Prod Driver 85-265 AC ±3% & decor. lighting, T8 3-level Switch Dimming IS31LT3938 DC/DC, 10-450 DC - 95 External LED Lighting; Signal SOP-8 High voltage LED driver with Prod AC/DC 85-265 AC ±3% & decorative lighting Switch Dimming, Single External Driver FET IS31LT3935 DC/DC, 6-450 DC - 87* External Bulb replacement DFN-10 TRIAC Dimmable AC/DC LED S=Q1/13 AC/DC 85-265 AC ±2% T8, Par38 Driver with Active PFC Driver * Note: Flyback configuration

Linear Part No. Driver VDD (V) IOUT Power Typical Package Key Feature Status Accuracy Transistor Applications IS32LT3117 Constant 5.5-60 DC 350mA Built-in Automotive lighting, SOP-8 4 channel linear regulated, constant S=Q2/13 Current ±3% (per low EMI lighting ap- current LED driver channel) plications IS31LT3135 Constant 2.7-5.5 500mA Built-in Miner lamp, Torch, SOP-8 Main/sub dual-channel driver with Prod Current ±5% Battery powered LED short circuit and over temp. protection lighting

Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com 15 Ordering Information

Product Selector Guide LED Driver Evaluation Boards IC Part Number Evaluation Board Part Number Description IS31LT3135 IS31LT3135-V1GRLS2-EB Dual Ch. (Main/Sub) Evaluation Board (UV Threshold 1.17V) IS31LT3135-V2GRLS2-EB Dual Ch. (Main/Sub) Evaluation Board (UV Threshold 1.23V) IS31LT3350 IS31LT3350-V1SDLS2-EB3CH 3CH Evaluation Board IS31LT3360 IS31LT3360-SDLS3-EBMR16 MR16 Evaluation Board IS31LT3360-SDLS3-EBAIC AIC Evaluation Board IS31LT3360-SDLS3-EBSG HB LED General Evaluation Board IS31LT3354 IS31LT3354_STLS2_EBDCDC AC Input Evaluation Board IS31LT3380 IS31LT3380_GRLS3_EBMR16 1.2A MR16 Evaluation Board IS31LT3505 IS31LT3505-SLS2-EBDC Constant Current, Step-Up Evaluation Board IS31LT3910 IS31LT3910_T8_EB T8 Evaluation Board IS31LT3918 IS31LT3918_GRLS2_EBT8 T8 Evaluation Board IS31LT3938 IS31LT3938-GRLS2-EBBULB Bulb Evaluation Board IS31LT3938-GRLS2-EBDCDC DC-DC Evaluation Board IS31LT3938-GRLS2-EBT8 T8 Evaluation Board IS31LT3948 IS31LT3350-V1SDLS2-EBAIC White LED Array Evaluation Board IS31LT3948-GRLS2-EBMR16 MR16 Evaluation Board IS31LT3948-GRLS2-EBAC General Evaluation Board

16 Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com Ordering Information

Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com 17 ISSI Sales Offices

*HEADQUARTERS China Office China Office India Office Japan Office West Coast Office Beijing Xiamen City New Delhi Tokyo San Jose, CA 86-10-82274081 Tel. 86-592-3228128 Tel. 91-11-46536132 Tel. 81-3-5339-2950 Tel. 408-969-6600 Tel. 86-10-82274082 Tel. 86-592-3228077 Fax 91-80-22251133 Fax 81-3-5339-2951 Fax 408-969-7800 Fax 86-10-82274079 Fax

Central Office China Office Taiwan Office India Office Korea Office Copell, TX Shanghai Hsin-Chu Bangalore Kyunggi-Do 972-393-9900 Tel. 86-21-50802288 Tel. 886-3-5780333 Tel. 91-80-41472556 Tel. 82-31-715-6406 Tel. 408-969-4749 Fax 86-21-50802028 Fax 886-3-5783000 Fax 91-80-41472558 Fax 82-31-715-6209 Fax

East Coast Office China Office Taiwan Office India Office Singapore Office Dunstable, MA Shenzhen Taipei Chennai +65-6316-3035 Tel. 978-649-1216 Tel. 86-755-88319800 Tel. 886-2-26962140 Tel. 91-44-42218428 Tel. +65-6316-3039 Fax 978-649-3208 Fax 86-755-88319810 Fax 886-2-26962252 Fax 91-44-42218222 Fax

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1940 Zanker Road • San Jose, CA 95112-4216 Tel: 408-969-6600 • Fax: 408-969-7800 • Email: [email protected] • Web: www.issi.com

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