Analog & Mixed Signal Products - SRAM, DRAM, SDRAM · PDF file · 2013-01-25Graphical Selector Guide VIN

Analog & Mixed Signal Products

Graphical Selector Guide

VIN

<6V

DC

<40V

DC

<256

VAC

DC/DC Buck

AC/DC Buck

DC/DC Boost

Constant Current

AC/DC Flyback

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

IS31LT3916External MosFET Integrated PFC Flyback Config

IS31LT3938Higher Drive MosFET Linear/PWM/Switch Dim Over Temp/Cur/Volt Prot

IS31LT3918External MosFET Linear/PWM/Switch Dim Over Temp/Cur/Volt Prot

IS31LT3910External MosFET Linear/PWM Dimming Temp. Compensation

IS31LT3350Integrated MosFET (750mA)Linear/PWM Dimming

IS31LT3352Integrated MosFET (750mA)Linear/PWM DimmingTemp. Compensation

IS31LT3360Integrated MosFET (1.2A)

IS31LT3380Integrated MosFET (1.2A)Switch Dimming

IS31LT3354External MosFETLinear/PWM Dimming

IS31LT3505Integrated MosFET (2.1A) 1Mhz SwitchingOverTemp Protection

IS31LT3948External MosFETPFM/PWM Operation OverTemp/Volt Protection

IS31LT3135Integrated MosFET Main/Aux Dual Channel

IS32LT3117Automotive Grade (pending)Thermal current regulationabove 140°C

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

HBLED Driver Selection

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

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

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

Feb. 2013 1940 Zanker Rd., San Jose, CA. 95112 • Tel: 408.969.6600 • Support: [email protected] • www.issi.com 3

DC/DC Buck

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• Supports DMX512 control interface

IS31LT335040V/750mA Integrated Switch,

Continuous Mode Buck Converter

SOT23-5 SOT89-5

MR16, GU10 Lamp Application

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

IS31LT3350


DC/DC Buck

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

• Supports DMX512 control interface

IS31LT336040V/1.2A Integrated Switch,Continuous Mode Buck Converter

MR16, GU10 Lamp Application

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

SOT89-5

IS31LT3360


DC/DC Buck

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

IS31LT335240V/750mA Buck LED Driver

with Temperature Compensation

SOP-8

Demo Boards Available• MR16 with Temperature Compensated LED

• Street Light

Applications• MR16 LED Spotlight

• Decorative LED lighting

• Wall Washer Lighting

750mA

0

50

100

150

200

250

300

350

400

0 15 30 45 60 75 90

Iout

(mA

)

Temperature ⁰C

Output Current vs Temperature

Adjustable Slope

Adjustable Temperature Breakpoint

Supp

ly C

urre

nt (m

A)

Demo Boards Available• MR16 with Multiple Power Output Levels

• MR16 with Voltage Doubler

• RGB Decorative Lighting with 6 outputs

• 4 Channel, Common Anode RGB Decorative Lighting

Applications• Low voltage halogen replacement LEDs (MR16)

• PAR LED bulb

• Low voltage industrial lighting, floodlamps

• LED back-up lighting, wall washers

SOP-8

DIM1 DIM2 DIM LEVELS*

Floating Floating No DimmingFloating GND 100%-50%-20%

GND Floating 100%-60%-30%GND GND 100%-30%


DC/DC Buck

Features• Up to 1.2A output current with 5% accuracy


• Integrated 40V power switch for decreased parts count

• Multi-modes switch dimming

• Use ordinary power switch with existing wiring and fixtures


IS31LT338040V/1.2A LED Driver with Switch Dimming

*Switch ON/OFF cycles the DIM Ratio

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



DC/DC Buck

Features• Up to 2A output current with 3% accuracy

• Output current only limited by external com-ponent selection




• Single pin ON/OFF and brightness control using DC voltage or PWM

IS31LT335440V/LED Driver with External Switch

2A

SOP-8


DC/DC Boost

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

IS31LT3948PFM Mode Boost LED Driver with External NMOS for High Power Applications

Demo Boards Available• General Purpose Boost Demo Board

Applications• Street Lighting

• MR16


• TV Monitor Backlight

• Notebook

• Automotive

Street Lamp Application


DC/DC Boost

Features• 6V to 30V supply voltage

• Boost output up to 35V

• Output current up to 1A

• PWM dimming control


• Integrated 35V power switch

• Internal soft start


IS31LT35051.0Mhz Boost Converter with 35V Internal NMOS

for Medium Power Applications

MSOP-10

Demo Boards Available• General Purpose Boost Demo Board

Applications• TV Monitor Backlight

• PDA, Notebook

• GPS Receiver

1A


AC/DC Buck

0

50

100

150

200

250

300

350

400

0 15 30 45 60 75 90

Iout

(mA

)

Temperature ⁰C

Output Current vs Temperature

Features• Up to 1A output current with 5% accuracy


• Temperature compensation to regulate LED current

• Single pin on/off and brightness control using Linear or PWM



• Non-isolated Design

IS31LT3910Universal High Brightness LED Driver with Temp Compensation

Adjustable Temperature Breakpoint

Adjustable Slope

Demo Boards Available• Single Voltage input, 220V, 24x12 LED (T8)

(EMI-passed)

• Full Voltage range input, 24x12 LED (T8) (EMI-passed)

Applications• DC/DC or AC/DC constant current driver

• RGB Backlight

• Fluorescent Tube (T8/T5) replacement

• Signal Lamp

• Decorative Lighting

SOP-8


Floating Floating No DimmingFloating GND 2 levels: 100%-30%-100%

GND Floating 2 levels: 100%-50%-100%GND GND 3 levels: 100%-50%-20%-100%


AC/DC Buck

Features• Wide input range from 6VDC to 450DC or

85VAC to 265VAC

• 92% efficiency with 1% output current accuracy

• Linear, PWM or switch dimming capability


• Over current, voltage and temp protection

• Requires few external components

• Non-isolated Design

IS31LT3918High Voltage LED Driver with Switch Dimming

Demo Boards Available• Single Voltage input, 220V, 24x12 LED (T8)

(3-Power Levels)

• Full Voltage range input, 24x12 LED (T8) (3-Power Levels)

• Full Voltage Range Input, Bulb Replacement (3-Power Levels)

Applications• DC/DC or AC/DC LED driver applications

• General purpose constant current source

• Signal and decorative LED lighting

• Backlighting LED driver

1A


SOP-8


Floating Floating No DimmingFloating GND 100%-30%-100%

GND Floating 100%-50%-100%GND GND 100%-50%-20%-100%


AC/DC Buck


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


• Very few external components

IS31LT3938High Voltage LED Driver with Three Level Power Sequencing

Applications• DC/DC or AC/DC LED driver applications

• General purpose constant current source

• Signal and decorative LED lighting

• Backlighting LED driver

SOP-8


AC/DC Buck

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

IS31LT3916Flyback Configuration Isolated LED Driver

with Integrated PFC

Applications• Isolated LED driver

• Tube/Bulb Replacement

• Signal Lamp

• Decoration Lighting

Demo Boards Available• Isolated T5/T8

• Isolated bulb replacement

SOP-8


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

• Low IC quiescent current less than 300uA

IS31LT3135Main/Aux Dual Channel LED Driver with Automatic Switchover

Linear Driver

Main LED current change with power supply

Miner LED Lamp

Applications• Miner Lamp

• General LED Lighting

• Head Lamp

Demo Boards Available• LED Mining Lamp

SOP-8

350348346344342340338336334332330

Imai

n (m

A)

4 4. 2 4. 4 4. 6 4. 8 5 5. 2 5. 4VDC (V)


Ordering Information

Product Selector GuideSwitchingPart No. Driver VDD (V) IOUT

AccuracyEffcy (%)

Power Transistor

Typical Applications

Package Key Feature Status

IS31LT3350 DC/DCBuck

6-40 750mA±5%

95 Built-in Low voltage LED lighting, MR16 replacement

SOT23-5, SOT89-5, SOP-8

Single pin ON/OFF or brightness control with DC/PWM, thermal shutdown

Prod


6-40 750mA±5%

95 Built-in Low voltage LED lighting, MR16 replacement

SOP-8 Cascadable, temp. compensation and one pin ON/OFF/dimming control

Prod


6-40 -±3%

98 External Low volt. LED light-ing, Illuminated sign

SOT23-5 1200:1 dimming ratio LED driver with thermal shutdown protection

Prod


6-40 1.2A±3%

98 Built-in MR16, MR11 spot light, PAR light

SOT89-5 High efficiency with open/short and thermal shutdown protection

Prod


8.5-40 1.2A±5%

98 Built-in MR16, MR11 spot light, PAR light

SOP-8 3-level switch dimming control, open/short and thermal shutdown protection

Prod

IS31LT3505 DC/DC Boost

6-30 24W±5%

90 Built-in Battery powered LED, solar light

MSOP-10 1MHz Boost Converter with 35V Internal NMOS

Prod

IS31LT3515 DC/DCBuck/Boost

6-40 ±3% 90 External MR16, MR11 spot light, PAR light

QFN-16 40V Buck/Boost converter, 3% ac-curate w/TRIAC Dimming support for compatible E-XFMR

S=Q3/13

IS31LT3948 DC/DC Boost

5-100 90 External Street lamp, LED lighting, Gen. illum.

SOP-8 Wide input voltage range, over-voltage/temperature protection

Prod

IS31LT3910 AC/DCDriver

8-450 DC110/220 AC

500mA±7%

90 External T8, PAR light SOP-8 Non-isolation, linear/PWM dim-ming, temperature compensation

Prod

IS31LT3916 Flyback Buck/Boost

6-450 DC85-265 AC

-±3%

85 External T8, Bulb Replace-ment, spot light, PAR light

MSOP-8 Isolated and non-isolated Off-Line Converter with active PFC

S=Q1/13

IS31LT3918 AC/DCDriver

6-450 DC85-265 AC

-±3%

95 External LED Lighting; Signal & decor. lighting, T8

SOP-8 High voltage LED driver with 3-level Switch Dimming

Prod

IS31LT3938 DC/DC, AC/DC Driver

10-450 DC85-265 AC

-±3%

95 External LED Lighting; Signal & decorative lighting

SOP-8 High voltage LED driver with Switch Dimming, Single External FET

Prod

IS31LT3935 DC/DC,AC/DCDriver

6-450 DC85-265 AC

-±2%

87* External Bulb replacementT8, Par38

DFN-10 TRIAC Dimmable AC/DC LEDDriver with Active PFC

S=Q1/13

* Note: Flyback configuration

Part No. Driver VDD (V) IOUT Accuracy

Power Transistor

Typical Applications

Package Key Feature Status

IS32LT3117 Constant Current

5.5-60 DC 350mA ±3% (per channel)

Built-in Automotive lighting, low EMI lighting ap-plications

SOP-8 4 channel linear regulated, constant current LED driver

S=Q2/13

IS31LT3135 Constant Current

2.7-5.5 500mA±5%

Built-in Miner lamp, Torch, Battery powered LED lighting

SOP-8 Main/sub dual-channel driver with short circuit and over temp. protection

Prod

Linear


Product Selector GuideLED Driver Evaluation BoardsIC Part Number Evaluation Board Part Number DescriptionIS31LT3135 IS31LT3135-V1GRLS2-EB

IS31LT3135-V2GRLS2-EBDual Ch. (Main/Sub) Evaluation Board (UV Threshold 1.17V)Dual Ch. (Main/Sub) Evaluation Board (UV Threshold 1.23V)

IS31LT3350 IS31LT3350-V1SDLS2-EB3CH 3CH Evaluation BoardIS31LT3360 IS31LT3360-SDLS3-EBMR16

IS31LT3360-SDLS3-EBAICIS31LT3360-SDLS3-EBSG

MR16 Evaluation BoardAIC Evaluation BoardHB LED General Evaluation Board

IS31LT3354 IS31LT3354_STLS2_EBDCDC AC Input Evaluation BoardIS31LT3380 IS31LT3380_GRLS3_EBMR16 1.2A MR16 Evaluation BoardIS31LT3505 IS31LT3505-SLS2-EBDC Constant Current, Step-Up Evaluation BoardIS31LT3910 IS31LT3910_T8_EB T8 Evaluation BoardIS31LT3918 IS31LT3918_GRLS2_EBT8 T8 Evaluation BoardIS31LT3938 IS31LT3938-GRLS2-EBBULB

IS31LT3938-GRLS2-EBDCDCIS31LT3938-GRLS2-EBT8

Bulb Evaluation BoardDC-DC Evaluation BoardT8 Evaluation Board

IS31LT3948 IS31LT3350-V1SDLS2-EBAICIS31LT3948-GRLS2-EBMR16IS31LT3948-GRLS2-EBAC

White LED Array Evaluation BoardMR16 Evaluation BoardGeneral Evaluation Board




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

© 2013, ISSI, Inc. All Rights Reserved. ISSI is a registered trademark of Integrated Silicon Solution, Inc.

ISSI Sales Offices*HEADQUARTERS West Coast Office San Jose, CA 408-969-6600 Tel. 408-969-7800 Fax

China Office Beijing 86-10-82274081 Tel. 86-10-82274082 Tel. 86-10-82274079 Fax

China Office Xiamen City 86-592-3228128 Tel. 86-592-3228077 Fax

India Office New Delhi 91-11-46536132 Tel. 91-80-22251133 Fax

Japan Office Tokyo 81-3-5339-2950 Tel. 81-3-5339-2951 Fax

Central Office Copell, TX 972-393-9900 Tel. 408-969-4749 Fax

China Office Shanghai 86-21-50802288 Tel. 86-21-50802028 Fax

Taiwan Office Hsin-Chu 886-3-5780333 Tel. 886-3-5783000 Fax

India Office Bangalore 91-80-41472556 Tel. 91-80-41472558 Fax

Korea Office Kyunggi-Do 82-31-715-6406 Tel. 82-31-715-6209 Fax

East Coast Office Dunstable, MA 978-649-1216 Tel. 978-649-3208 Fax

China Office Shenzhen 86-755-88319800 Tel. 86-755-88319810 Fax

Taiwan Office Taipei 886-2-26962140 Tel. 886-2-26962252 Fax

India Office Chennai 91-44-42218428 Tel. 91-44-42218222 Fax

Singapore Office +65-6316-3035 Tel. +65-6316-3039 Fax

Southeast Office Raleigh, NC 919-844-5873 Tel.

China Office Hong Kong 852-23192211 Tel. 852-23192004 Fax

Europe Office Devon England 44-1803-840110 Tel. 44-1803-865199 Fax

Documents

Analog & Mixed Signal Products - SRAM, DRAM, SDRAM · PDF file · 2013-01-25Graphical Selector Guide VIN