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Solutions Search - Automotive Lighting

LTspice Models of ISO 7637-2 & ISO 16750-2 Transients

Dan Eddleman - Senior Applications Engineer Apr 5th 2017
Introduction Simulating the ISO 7637-2 and ISO 16750-2 transients early in the design phase of an automotive product can pinpoint issues that would otherwise come to light during electromagnetic compatibility (EMC) testing. If a product fails EMC testing, hardware modifications are required, project schedules suffer, and extra ...

Blog Post LTspice 

 

LT3598 Auto Battery Powered Driver for 20 LEDs with 90mA Each String

Oct 5th 2016
The LT3598 is a fixed frequency step-up DC/DC converter designed to drive up to six strings of LEDs at an output voltage up to 44V. LED dimming can be achieved with analog dimming on the CTRL pin, and with pulse width modulation dimming on the PWM pin. The LT3598 accurately regulates LED current even when the input voltage is ...

Circuit 

 

LT3755 Buck-Boost LED Driver for Automotive

Sep 6th 2016
The LT3755, LT3755-1 and LT3755-2 are DC/DC controllers designed to operate as a constant-current source for driving high current LEDs. They drive a low side external N-channel power MOSFET from an internal regulated 7.15V supply. The fixed frequency, current mode architecture results in stable operation over a wide range of ...

Circuit 

 

LT3756 30W White LED Headlamp Driver with Thermal Derating

Sep 6th 2016
The LT3756, LT3756-1 and LT3756-2 are DC/DC controllers designed to operate as a constant-current source for driving high current LEDs. They drive a low side external N-channel power MOSFET from an internal regulated 7.15V supply. The fixed frequency, current-mode architecture results in stable operation over a wide range of ...

Circuit 

 

DC2247A - LT3922 Demo Board | Sync Boost LED Driver, 4V ≤ VIN ≤ 28V, VLED = 34V @ Up to 330mA, 2MHz fSWITCH

Aug 25th 2016
Demonstration circuit DC2247A is a synchronous 2MHz boost LED driver featuring the LT3922. The LT3922 features a low EMI Silent Switcher architecture and an optional spread spectrum frequency modulation (SSFM) that further reduces EMI. It has a 2A/36V internal power switch, but the demo board has been configured to use a 4V ...

Demo Board LTspice 

 

DC2345A - LT8391EFE Demo Board | Sync Buck-Boost LED Driver, 4V ≤ VIN ≤ 60V, VLED = 25V @ 2A

May 9th 2016
Demonstration circuit 2345A is a 60V synchronous 4-switch buck-boost LED controller with spread spectrum featuring the LT®8391 LED driver. It accepts an input voltage from 4V to 60V and drives a single string of LEDs up to 25V at 2A. DC2345A runs at 400kHz switching frequency without spread spectrum, but spread spectrum ...

Demo Board LTspice 

 

DC2218A - LT3965EFE/LT3797 Demo Board | 2-String Buck LED Driver with Matrix LED Dimmer; 9V ≤ VIN ≤ 30V, Up to 30VLED @ 500mA (8 LEDs/String)

Dec 16th 2015
Demonstration circuit DC2218A is a matrix LED dimmer system featuring the LT3965 8-switch matrix LED dimmer IC. There are 16 500mA LEDs that can be individually turned on, off, or PWM dimmed with two 8-switch LED dimmer LT3965 ICs. The two strings of LEDs are driven with two buck LED driver outputs of the LT3797 triple LED controller ...

Demo Board 

 

DC2176A - LT3909EDD Demo Board | 2-String Boost LED Driver, 7V ≤ VIN ≤ 36V, VLED up to 35V @ 50mA (x2)

Sep 29th 2015
Demonstration circuit 2176A features the LT®3909, a 2-string × 50mA, 2MHz step-up LED driver with ±1.8% current matching. The LT3909 precisely regulates two LED strings for equal current, supports LED dimming that reduces brightness down to a 1/40,000 ratio, protects against faults and also reports faults. The ...

Demo Board LTspice 

 

LT3761 94% Efficient Boost LED Driver for Automotive Headlamp with 25:1 PWM Dimming

Sep 3rd 2015
The LT®3761 is a DC/DC controller designed to operate as a constant-current source and constant-voltage regulator. It features a programmable internal PWM dimming signal. The LT3761 is ideally suited for driving high current LEDs, but also has features to make it suitable for charging batteries and supercapacitors. The fixed ...

Circuit 

 

DC2361A - LT3952EFE Demo Board | 2MHz LED Driver, 8V ≤ VIN ≤ 28V, IOUT = 330mA at 40V

Jun 8th 2015
Demonstration circuit DC2361A is a 2MHz 60V LED driver with internal 4A switch featuring the LT3952 monolithic LED driver. It accepts an input voltage from 8V to 28V (with transient to 36V) and boosts to a single string of LEDs up to 40V at 330mA. DC2361A features an integrated 4A switch, constant current and constant voltage ...

Demo Board 

 

DC2013A - LT3952EFE Demo Board | CC/CV Boost LED Driver, 5V ≤ VIN ≤ 36V, VLED = VIN up to 50V @ 330mA

Apr 30th 2015
Demonstration Circuit DC2013A is a 60V LED driver with internal 4A switch featuring the LT®3952 monolithic LED driver. It accepts an input voltage from 5V to 36V (with transient to 42V) and boosts to a single string of LEDs up to 50V LEDs at 330mA. DC2013A features an integrated 4A switch, constant-current and constant-voltage ...

Demo Board LTspice 

 

DC2339A - LT3744 Demo Board | Sync Buck LED Driver, 5.5V ≤ VIN ≤ 24V, Drives 3 LEDs @ up to 20A Each

Mar 9th 2015
Demonstration circuit 2339A is a high current synchronous step-down LED driver featuring the LT®3744. The unique drive stage used on the LT3744 allows the anodes of three LEDs to be connected together for better heat sinking in both the step-down configuration and the inverting buck-boost configuration (shown in a separate ...

Demo Board LTspice 

 

LT1158 High Current Lamp Driver with Short-Circuit Protection

Sep 2nd 2014
A single input pin on the LT1158 synchronously controls two N-channel power MOSFETs in a totem pole configuration. Unique adaptive protection against shoot-through currents eliminates all matching requirements for the two MOSFETs. This greatly eases the design of high efficiency motor control and switching regulator systems. ...

Circuit LTspice 

 

LT3796 SEPIC LED Driver with 100:1 Analog Dimming

Aug 25th 2014
The LT®3796/LT3796-1 are DC/DC controllers designed to regulate a constant-current or constant-voltage and are ideal for driving LEDs. The fixed frequency and current mode architecture result in stable operation over a wide range of supply and output voltages. Two ground referred voltage FB pins serve as the input for several ...

Circuit LTspice 

 

DC1784A - LT3797EUKG Demo Board | Triple Boost LED Driver, 2.5V ≤ VIN ≤ 40VIN, 50VLED @ 1A (x3)

Jan 21st 2014
DC1784A is a triple boost LED driver featuring the LT3797 triple boost LED controller. It accepts an input voltage from 2.5V to 40V (with higher transient) and drives three independent strings of up to 50V LEDs at 1A. DC1784A features independent PWM and analog dimming of each of the three LED strings. Each of the three channels ...

Demo Board LTspice 

 

DC2079A - LT3954 Demo Board | Boost LED Driver with PWM Generator; 5V ≤ VIN ≤ 30V, VLED up to 32V @ 650mA

Jun 5th 2013
Demonstration circuit 2079A is a Boost LED driver featuring the LT3954. The LT3954 is a multitopology 40VIN/40VOUT LED driver with an internal device 40V, 5.4A power switch. It generates its own PWMOUT waveform from its internal PWM generator for accurate PWM dimming with up to 33:1 brightness ratio. The demo circuit ...

Demo Board LTspice 

 

DC1831A - LT3763 Demo Board I High Power CC/CV Synchronous Buck LED Driver Controller

Nov 14th 2012
Demonstration circuit 1831A is a high power constant current, constant voltage synchronous buck controller featuring the LT®3763. The input of the demo board is up to 60V. The output is optimized for 10V, 10A as a LED driver. The input voltage range of the LT3763 itself is 6V to 60V. The demo board input range is 12V to ...

Demo Board 

 

LT3796 34W LED Driver With Robust Output Short-Circuit Protection

Apr 3rd 2012
Figure 1 shows the LT3796 configured as a boost converter to drive a 34W LED string from a wide input range. The LED current is derated at low input voltages to prevent external power components from overheating. The front-end current sense amplifier monitors the input current by converting the input current to a voltage signal ...

Circuit LTspice 

 

LT3791 98.5% Efficient 100W (33.3V 3A) Buck-Boost LED Driver

Mar 7th 2012
The LT®3791 is a synchronous 4-switch buck-boost LED driver controller. The controller can regulate LED current up to 52V of LED string with input voltages above, below, or equal to the output voltage. The constant-frequency, forced-continuous current mode architecture allows its frequency to be adjusted or synchronized ...

Circuit LTspice 

 

LT3791 15–58VIN to 33.3V 3A LED Automotive Headlight Driver with Up to 98.5% Efficiency

Mar 7th 2012
Airplanes and big trucks with 24V batteries need powerful, efficient and robust headlights and spotlights. This circuit shows a 33.3V, 3A (nine Luminus SSR-90 LEDs) buck-boost LED driver that runs from 15V to 58V input with up to 98.5% efficiency. The 4-switch synchronous topology drives high power LEDs with minimal switch power ...

Circuit 

 

DC1497A - LT3597EUHG Demo Board | Triple Step-Down LED Driver, 6V ≤ VIN ≤ 55V, VLED up to 34V @ 100mA (x3)

May 10th 2011
Demonstration circuit 1497A is a 60V triple step-down LED driver featuring the LT3597. The demo board is optimized for driving nine white LEDs at 100mA output per regulator from a 48V input. The LT3597 features a 5V to 55V input voltage range; depending on the number of LEDs used, the minimum input voltage will change. When ...

Demo Board LTspice 

 

DC1511A-B - LTM8042EV-1 Demo Board | uModule Boost LED Driver, 3V ≤ VIN ≤ 30V, Vout up to 32V @ 350mA

Oct 28th 2010
Demonstration circuits 1511A-B features the LTM®8042-1, which is a complete 350mA µModule LED driver. The demonstration circuit is configured using the boost topology, accepting an input voltage from 3V to 30V and supporting an output up to 32V. The default switching frequency is 950kHz for the DC1511A-B, but ...

Demo Board LTspice 

 

DC1511A-A - LTM8042EV Demo Board | uModule Boost LED Driver, 3V ≤ VIN ≤ 30V, Vout up to 32V @ 1A

Oct 22nd 2010
Demonstration circuits 1511A-A features the LTM®8042, which is a complete 1A µModule LED driver. The demonstration circuit is configured using the boost topology, accepting an input voltage from 3V to 30V and supporting an output up to 32V. The default switching frequency is 600kHz for the DC1511A-A, but can be ...

Demo Board LTspice 

 

LT3518 Full-Featured 45V, 2.3A Switch Current LED Driver - Video Product Brief

Steve Knoth - Senior Product Marketing Engineer Aug 25th 2010
The LT3518 is a current mode DC/DC converter with an internal 2.3A, 45V switch specifically designed to drive LEDs. The LT3518 operates as a LED driver in boost,buck and buck-boost modes. It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or constant-voltage source. Programmable ...

Video LTspice 

 

DC1327B - LT3599EFE Demo Board | 4-Channel Boost LED Driver, 8V ≤ PVIN ≤ 16V, VLED up to 44V @ 80mA

Jul 21st 2010
Demonstration circuit 1327B is a 4-Channel 80mA LED Driver with +/-1.5% Current Matching featuring the LT3599. The LT3599 is a step-up DC/DC converter designed to drive up to 4-strings of LEDs at up to 120mA per string, and with an output voltage up to 44V. The LED strings are connected to internal current sources where the ...

Demo Board LTspice 

 

94% Efficient 25W White LED Automotive Headlamp Driver

May 18th 2010
The LT3956 is a DC/DC converter designed to operate as a constant-current source and constant-voltage regulator. It is ideally suited for driving high current LEDs. It features an internal low side N-channel power MOSFET rated for 84V at 3.3A and driven from an internal regulated 7.15V supply. The fixed frequency, current-mode ...

Circuit LTspice 

 

DC1602A - LT3741EFE Demo Board | 120W LED Driver, 12V ≤ VIN ≤ 24V, CC/CV Synchronous Step-Down Controller, Vout = 6V @ 20A

May 5th 2010
Demonstration circuit 1602 is a High Power Constant Current, Constant Voltage Synchronous Buck Controller featuring the LT3741. The demo board is optimized for 20A output from a 12V input. Being an LED driver, the output current is being regulated until the output voltage reaches a programmed voltage limit. The voltage limit ...

Demo Board LTspice 

 

An Automotive Halogen Headlamp Power Supply

Mar 25th 2010
This circuit example demonstrates using a SEPIC-based automotive halogen headlight power supply that improves bulb reliability while also ensuring optimum illumination. The design maintains 12V at headlight voltage over a 9V to 15V input voltage range. It works well up to 1Ω interconnection resistance. The Virtual Remote Sense ...

Circuit 

 

DC1612A-B - LT3519EMS-2 Demo Board | SEPIC LED Driver, 2.2MHz fSW, 6V ≤ VIN ≤ 24V, VLED = 16V @ 150mA

Mar 12th 2010
Demonstration Circuit 1612A is a fully integrated LED driver with 750mA switch current featuring the LT®3519-1 (1MHz switching) and the LT3519-2 (2.2MHz switching). The multitopology LT3519 operates with an input voltage up to 30V (40V transients) but the demo board has open LED protection set at 18V. The board is optimized ...

Demo Board LTspice 

 

DC1612A-A - LT3519EMS-1 Demo Board | SEPIC LED Driver, 1MHz fSW, 6V ≤ VIN ≤ 24V, VLED = 16V @ 150mA

Mar 12th 2010
Demonstration Circuit 1612A is a fully integrated LED driver with 750mA switch current featuring the LT®3519-1 (1MHz switching) and the LT3519-2 (2.2MHz switching). The multitopology LT3519 operates with an input voltage up to 30V (40V transients) but the demo board has open LED protection set at 18V. The board is optimized ...

Demo Board LTspice 

 

DC1573A - LT3760 Demo Board | 8-Channel Boost LED Driver, 20V ≤ VIN ≤ 28V, VLED = 55V @ 100mA

Feb 22nd 2010
DC1573A is an 8-Channel High Voltage Boost LED Driver featuring the LT®3760. The LT3760 drives up to 100mA per string and has a maximum LED string voltage of 45V. The VIN terminal is powered from an 10V to 14V input supply and is distinct from the 24V PVIN supply (20V to 28V) for best thermal performance. Overvoltage ...

Demo Board 

 

DC1405A - LT3492EFE Demo Board | Boost/ Buck-Boost Triple Output LED Driver, 8V ≤ VIN ≤ 40V, VLED = 54V @ 61mA (x3)

Feb 22nd 2010
Demonstration circuit 1405 is a Triple Boost or Buck/Boost LED Driver featuring the LT3492. The LT3492 is a triple output DC/DC converter designed to operate as current sources for driving LEDs using . Each of the three regulators on the demo board is independently operated. The board can be configured with either boost ...

Demo Board LTspice 

 

DC1470A - LT3743EUF Demo Board | High Current Step-Down LED Driver Controller, 6.5V ≤ VIN ≤ 24V, VLED = 6V @ 20A

Jan 7th 2010
Demonstration circuit 1470 is a High Current Synchronous Step-Down LED Driver with Three-State Control featuring the LT3743EUFD. The demo board is optimized for 20A output from a 12V input. Being an LED driver, the output current is regulated until the output voltage reaches a programmed voltage limit. The voltage limit on this ...

Demo Board LTspice 

 

DC1319B-B - LT3756EMSE-1 Demo Board | Boost LED Driver Controller, 8V ≤ VIN ≤ 80V, VLED up to 80V @ 0.5A

Nov 12th 2009
Demonstration circuit 1319B is a high voltage and high current LED driver controller feature the LT3756-1 (DC1319B-B) or the LT3756-2 (DC1319B-A). The device's VIN pin input voltage and LED output voltage can be as high as 100V; however, the demo board's open-LED overvoltage protection limits the input voltage to 80V and ...

Demo Board LTspice 

 

DC1319B-A - LT3756EMSE-2 Demo Board | Boost LED Driver Controller, 8V ≤ VIN ≤ 80V, VLED = 80V @ 0.5A

Nov 12th 2009
Demonstration circuit 1319B-A/1319B-B is a high voltage and high current LED driver controller. The VIN pin input voltage is as high as 100V, and the LED output voltage is also as high as 100V. The demonstration circuit is assembled as a boost topology from 8V to 80V input and up to 80V LED output at 0.5A with an open-LED status ...

Demo Board LTspice 

 

DC1482A - LT3519EMS Demo Board | Boost LED Driver with Integrated Schottky Diode, 6V ≤ VIN ≤ 30V, VLED = 38V @ 100mA

Oct 22nd 2009
Demonstration Circuit 1482 is a fully integrated, multitopology LED driver with a 45V, 750mA power switch featuring the LT®3519. The board is optimized to drive a 100mA LED string from a 6V to 30V input power supply using a boost topology.The DC1482 has overvoltage protection at just above 40V if the LEDs are open or ...

Demo Board LTspice 

 

DC1436A - LT3754EUH Demo Board | 16-Channel Boost LED Driver, 20V ≤ VIN ≤ 28V, VLED = 55V @ 50mA

Oct 22nd 2009
DC1436A is a 16-Channel High Voltage Boost LED Driver featuring the LT3754. The LT3754 drives up to 50mA per string and has a maximum LED string voltage of 45V. The VIN terminal is powered from an 8V to 14V input supply and is distinct from the 24V PVIN supply (20V to 28V) for best thermal performance. Overvoltage protection ...

Demo Board 

 

DC1268B-B - LT3755EUD-1 Demo Board | Boost LED Driver Controller, 8V ≤ VIN ≤ 40V, VLED up to 54V @ 1A

Oct 7th 2009
Demonstration circuit 1268B is a high voltage and high current LED driver controller featuring the multitopology, constant current, constant voltage LT3755-2 (1268B-A) or LT3755-1 (1268B-B). The LT3755-2 features an OPEN LED status pin, while the LT3755-1 allows external frequency synchronization. The demonstration circuit is ...

Demo Board LTspice 

 

DC1285A - LT3598EUF Demo Board | 6-String Boost LED Driver, 3.2V ≤ VIN ≤ 5.5V, Vout up to 44V @ 20mA (x6) with 2% Current Matching

Aug 27th 2008
Demonstration circuit 1285 is a 6-String 30mA LED Driver with 1.5% Current Matching featuring the LT3598. The LT3598 is a step-up DC/DC converter designed to drive up to 6-strings of LEDs at an output voltage up to 44V. The LED strings are connected to internal current sources where the current level is set with an external ...

Demo Board LTspice 

 

30W White LED Automotive Headlamp Driver with Thermal Derating

Aug 19th 2008
The LT3756, LT3756-1 and LT3756-2 are DC/DC controllers designed to operate as a constant-current source for driving high current LEDs. They drive a low side external N-channel power MOSFET from an internal regulated 7.15V supply. The fixed frequency, current-mode architecture results in stable operation over a wide range of ...

Circuit LTspice 

 

DC1274A - LTM8040EV Demo Board | μModule Buck LED Driver, 4V ≤ VIN ≤ 36V, VLED up to 13V @ 1A

Jul 29th 2008
Demo circuit DC1274A features the LTM®8040 36V, 1A step-down constant current μModule® LED driver. The demonstration circuit is designed to drive a single LED or string of LEDs at up to 1A from a wide input voltage range of 4V to 36V. The maximum LED string voltage is 13V and the minimum voltage varies depending upon ...

Demo Board LTspice 

 

DC1205A - LT3592EDDB Demoboard | 500mA Wide Input Voltage Range Step-Down LED Driver with 10:1 Dimming

May 15th 2008
DC1205A - Demo Board for:LT3592 - 500mA Wide Input Voltage Range Step-Down LED Driver with 10:1 Dimming ...

Demo Board LTspice 

 

DC1268B-A - LT3755EUD-2 Demo Board | Boost LED Driver Controller, 8V ≤ VIN ≤ 40V, VLED up to 54V @ 1A

May 12th 2008
Demonstration circuit 1268B is a high voltage and high current LED driver controller featuring the multitopology, constant current, constant voltage LT3755-2 (1268B-A) or LT3755-1 (1268B-B). The LT3755-2 features an OPEN LED status pin, while the LT3755-1 allows external frequency synchronization. The demonstration circuit is ...

Demo Board LTspice 

 

50W White LED Automotive Headlamp Driver

May 12th 2008
The LT3755, LT3755-1 and LT3755-2 are DC/DC controllers designed to operate as a constant-current source for driving high current LEDs. They drive a low side external N-channel power MOSFET from an internal regulated 7.15V supply. The fixed frequency, current mode architecture results in stable operation over a wide range of ...

Circuit LTspice 

 

DC1279A - LT3517EUF | Boost LED Driver, 3V ≤ PVIN ≤ 40V, VLED up to 40V @ 330mA

Nov 29th 2007
Demonstration Circuit 1279 is a full-featured, multitopology LED driver with 1.5A switch current featuring the LT®3518. The board is optimized to drive a 330mA LED string with a total LED voltage between the input voltage and 40V in a boost topology. The input voltage range (VIN) is 3V to 30V, and the supply pin that powers ...

Demo Board LTspice 

 

DC1166A - LT3590EDC Demo Board | Buck Mode LED Driver, Tiny Package, 4.5V ≤ VIN ≤ 54V, VLED up to 40V @ 50mA

Jul 30th 2007
Demonstration circuit 1166 is a 48V Buck-Mode LED Driver featuring the LT3590. The LT3590 is a fixed frequency buck mode converter specifically designed to drive up to 10 LEDs in series at up to 50mA LED current. Series connection of the LEDs results in uniform LED brightness, eliminating the need for ballast resistors. The ...

Demo Board LTspice 

 

DC949A-B - LT3478EFE Demo Board | Boost LED Driver, Adj LED Current, 2.8V ≤ VIN ≤ 25V, VLED up to 36V @ 350mA

May 23rd 2007
Demonstration circuit 949A is a 4.5A peak switch current boost LED driver with PWM dimming featuring the LT3478/LT3478-1. The LT3478 can be used for boost, buck mode, and buck-boost mode LED drivers. DC949A-A includes the LT3478-1, a fixed 1A boost LED driver with the LED current sense resistor inside the IC. DC949A-B ...

Demo Board 

 

LT3478 Automotive TFT LCD Backlight

May 23rd 2007
The LT3478-1 reduces external component count and cost by integrating the LED current sense resistor. The LT3478 uses an external sense resistor to extend the maximum programmable LED current beyond 1A and also to achieve greater accuracy when programming low LED currents. Operating frequency can be set with an external resistor ...

Circuit LTspice 

 

DC949A-A - LT3478EFE-1 Demo Board | Boost LED Driver, Internal RSENSE, 2.8V ≤ VIN ≤ 25V, VLED up to 36V @ 350mA

May 23rd 2007
Demonstration circuit 949A is a 4.5A peak switch current boost LED driver with PWM dimming featuring the LT3478/LT3478-1. The LT3478 can be used for boost, buck mode, and buck-boost mode LED drivers. DC949A-A includes the LT3478-1, a fixed 1A boost LED driver with the LED current sense resistor inside the IC. DC949A-B ...

Demo Board 

 

DC986A - LT3496EUFD Demo Circuit | Buck-Mode Triple LED Driver, 3V ≤ VIN ≤ 45V, VLED up to 45V (x3)

Apr 30th 2007
Demonstration circuit 986 is a Triple Step-Down LED Driver featuring the LT3496EUFD. The LT3496 is a triple output DC/DC converter designed to operate as current sources for driving high current LEDs. Each ofthe three regulators on the demo board is independently operated. The default current for each output channel is 500mA. ...

Demo Board LTspice 

 

DC1288A - LT3496EUFD Demo Circuit | Buck-Boost or Boost Triple Output LED Driver, 8V ≤ VIN ≤ 16V, VLED up to 36V @ 200mA (x3)

Apr 30th 2007
Demonstration circuit 1288 is a Triple Boost or Buck-Boost LED Driver featuring the LT3496EUFD (for evaluating an LT3496 buck mode LED driver, use the demonstration circuit 986). The LT3496 is a triple output DC/DC converter designed to operate as current sources for driving high current LEDs. The board can be configured as either ...

Demo Board LTspice 

 

DC1124A - LT3591EDDB Demo Board | Boost LED Driver, 3V ≤ VIN ≤ 9V, VOUT = 40V @ 20mA

Mar 19th 2007
Demonstration circuit 1124 is an LED Driver with Integrated Schottky featuring the LT3591. The LT3591 is a fixed frequency step-up current mode DC/DC converter that drives up to ten white LEDs in series at 20mA. The input voltage range of the demo board is from 3V to 9V. 42V (typical) LED open circuit protection is provided. The ...

Demo Board LTspice 

 

DC976A - LT3476EUHF Demo Board | Quad Buck Mode LED Driver, PVIN ≤ 33V, Up to 27VLED @ 350mA or 1.05A

Sep 28th 2006
Demonstration circuit 976 is a Quadruple High Power LED Driver in Buck Mode featuring the LT3476EUHF. The LT3476 is a quad output, multitopology DC/DC converter designed to operate as a current source for driving high current LEDs. Each of the four regulators on the demo circuit is independently operated. The VIN power supply ...

Demo Board LTspice 

 

DC1315A - LT3475IFE-1Demo Board | Dual Step-Down LED Driver, 4V ≤ VIN ≤ 36V, Vout up to 13V @ 1.5A (x2)

Jun 1st 2006
Demonstration circuit 1315 features the LT®3475-1 dual step-down 1.5A LED driver in a 16-lead TSSOP thermally enhanced package. The demonstration circuit is designed to drive two 1.5A 4-LED strings (one on each channel) from an input voltage between 13V and 36V, but the start-up voltage is limited to 30V. The LT3475-1 operates ...

Demo Board LTspice 

 

DC850A - LTC3783 Demo Board | Boost LED Driver Controller, 3V ≤ VIN ≤ 14.4V, VLED up to 25V @ 360mA

Dec 15th 2005
Demonstration circuit 850A is a Boost LED Driver featuring the LTC3783 - a boost/SEPIC/flyback LED driver controller. The demo board requires a 3V to 14.4V input and provides 360mA LED current at up to 25V. It incorporates an output overvoltage protection feature to limit output voltage to less than 27V if the LED string is ...

Demo Board 

 

LTC3783: Single Inductor Buck-Boost LED Driver with Analog and PWM Dimming

Dec 15th 2005
The LTC3783 is a current mode LED driver and boost, flyback and SEPIC controller that drives both an N-channel power MOSFET and an N-channel load PWM switch. When using an external load switch, the PWMIN input not only drives PWMOUT, but also enables controller GATE switching and error amplifier operation, allowing the controller ...

Circuit LTspice 

 

DC876A - LT3486EFE Demo Board | Dual Boost LED Driver, 3V ≤ VIN ≤ 25V, VLED up to 36V @ 100mA (x2)

Sep 14th 2005
Demonstration circuit 876 is a dual step-up white LED driver with wide dimming range featuring the LT3486. The board is optimized to drive a string of six, eight, or ten white LEDs at 100mA from each of its two outputs with a PVIN input voltage range of 3V to 25V. The maximum LED output voltage must be less than 36V as the overvoltage ...

Demo Board LTspice 

 

DC841A - LT3477EFE | Constant Current Boost LED Driver, 2.7V ≤ VIN ≤ 16V, VLED up to 36V @ 330mA

May 5th 2005
Demonstration circuit 841 is a constant current LED boost converter with input current and output voltage protection featuring the LT®3477. The board is optimized to drive 330mA LED arrays with a total LED voltage between the maximum input voltage and 36V. The input voltage range is 2.7V to 16V.  DC841 has overvoltage ...

Demo Board LTspice 

 

DC762A - LTC3490EDD Demo Board | Boost White LED Driver, 1.8V ≤ VIN ≤ 3.5V, VLED up to 4V @ 350mA

Apr 29th 2005
Demonstration circuit 762 is a 350mA, 1W synchronous boost white LED driver featuring the LTC®3490 and a Lumileds Luxeon LED. The input voltage range of the LT3490 is 1V to 3.4V; however the demo board operates with a 1.8V to 3.5V range. The board comes with two AA alkaline battery cells to be stuffed in the battery pack ...

Demo Board 

 

DC810A - LTC3453EUF Demo Board | Buck-Boost Flash(500mA) / Torch(150mA) LED Driver, 2.7 ≤ VIN ≤ 5.5V, VLED

Mar 3rd 2005
Demonstration circuit 810 is a high efficiency buck-boost flash LED driver featuring the LTC®3453 and the LXCL-PWF1 Lumileds Luxeon Flash LED. The board is optimized for 500mA (300ms) LED flash current or 150mA constant LED torch current with a single Lithium-Ion battery input voltage range of 2.7V to 4.2V or three AAA batteries ...

Demo Board 

 

DC915A - LT3466EDD-1 Demo Board | Boost LED Driver Plus LCD Bias Supply, 2.7V ≤ VIN ≤ 14V, VLED up to 34V @ 15mA, VLCD Bias = ±15V @ 10mA

Mar 3rd 2004
Demonstration circuit DC915 features the LT3466-1 high efficiency boost white LED driver and a step-up converter. There is one LED driver output for 6 or 8 WLEDs and a separate DC/DC converter that generates outputs for the LCD bias. VO1 drives 8 LEDs in series with 15mA LED current and VO2/VO3 can delivery +/- 15V at 10mA current. ...

Demo Board LTspice 

 

DC773A - LTC3441EDE Demo Board | Sync Buck-Boost White LED Driver, 3V ≤ Vin ≤ 4.2V, VLED = 3.9V @ 1A

Jul 28th 2003
Demonstration circuit 773 is a synchronous buck-boost white LED driver featuring the LTC3441 and LTC2050. The board is optimized for 3.9V LED forward voltage output at 1000mA load current and a single lithium-ion input voltage range of 3V to 4.2V. the demo board drives a Luxeon III white LED (included on-chip). With its high ...

Demo Board 

 

DC1309A - LT3474EFE-1 Demo Board | Buck LED Driver, 4 ≤ VIN ≤ 36V, VLED up to 26V @ 1A


Demonstration circuit 1309 features the LT3474-1 36V step-down 1A LED driver. The demonstration circuit is designed to drive a string of 1A LEDs from a high input voltage. The LT3474-1 operates with a 4V to 36V input voltage range and maintains high LED current accuracy from 35mA to 1A. The LT3474-1 can be dimmed with its analog ...

Demo Board LTspice 

 

DC842A - LT3474EFE/IFE Demo Board | Step-Down LED Driver, 6V ≤ VIN ≤ 36V, VLED = 3.9V @ 1A


Demonstration circuit 842 features the LT®3474 constant frequency 1A step-down LED driver in a compact 16-lead TSSOP thermally enhanced package. The demonstration circuit is designed to drive a single Lumileds Luxeon III star white LED (included on the board) from a wide 6V to 36V input voltage range. The typical LED forward ...

Demo Board LTspice