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Solutions Search - Extended Temperature (H & MP) LED Drivers

DC2286A - LT3932 Demo Board | VIN = 8V to 36V driving two series LEDs (1ALED/6.6VLED) at 2MHz

Oct 27th 2017
Demonstration circuit DC2286A is a 36V, 2A synchronous 2MHz buck LED driver featuring the LT3932. It drives one or two series LEDs at 1A when VIN is between 8V and 36V. It can run down to 4VIN with a single LED (if UVLO is adjusted). DC2286A runs at 2MHz switching frequency. Spread spectrum frequency modulation (SSFM) can be ...

Demo Board 

 

DC2575A - LT8391AIFE Demo Board | 60V, 2MHz Synchronous Buck-Boost LED Driver Controller

Sep 5th 2017
Demonstration circuit DC2575A is a 60V 2MHz synchronous buck-boost LED driver featuring the LT8391A. It accepts an input voltage from 4V to 60V and drives a single string of LEDs up to 16V at 1.5A. DC2575A runs at 2MHz switching frequency without spread spectrum, but spread spectrum frequency modulation (SSFM) can be enabled ...

Demo Board 

 

60V 2MHz Buck-Boost Controllers Regulate High Power Voltage and Current with High Efficiency and Low EMI

Keith Szolusha - Applications Engineering Section Leader Aug 24th 2017
Design Note DN567: Introduction Synchronous buck-boost controllers are versatile and highly efficient. They can produce high power as both a boost and a buck with a single inductor, keeping power supply design simple. Normally, a buck-boost controller in a high power application is operated at a standard or low switching frequency, ...

Blog Post 

 

DC2424A - LT3964 Demo Board | VIN = 5V to 36V driving two separate LED strings (1ALED/~3.6VLED) at 2MHz

Aug 22nd 2017
The DC2424A is a 36V synchronous dual LED driver with I 2C featuring the LT®3964. It drives two separate LEDs (or channels of LEDs) at 1A when VIN is between 5V and 36V. DC2424A runs at 2MHz switching frequency. Its two channels can drive separate LED strings which can have different currents, voltages, or dimming ratios. ...

Demo Board 

 

36V, 2A Monolithic Synchronous Step-Down LED Driver with Silent Switcher Topology Minimizes EMI Concerns

Jul 11th 2017
MILPITAS, CA and NORWOOD, MA – July 11, 2017 – Analog Devices, Inc., which recently acquired Linear Technology Corporation, announces the LT3932, a monolithic, synchronous, step-down DC/DC converter with internal 36V, 2A power switches and an internal PWM generator. Its fixed frequency, peak current mode control ...

Press Release 

 

Low EMI LED Driver with Synchronous Internal 2A Switches

Keith Szolusha - Applications Engineering Section Leader Nov 17th 2016
The LT3922 40V, synchronous, Silent Switcher low EMI LED driver meets the demands of the next generation of LED systems. These LED drivers require more features and higher performance than ever before. Higher efficiency prolongs battery life and reduces heat in space-constrained applications. Wide voltage ranges are needed ...

Video 

 

Low EMI LED Driver Features 2A, 40V, Integrated, Synchronous Switches for Automotive Lighting

Keith Szolusha - Applications Engineering Section Leader Oct 12th 2016
Design Note DN557: Introduction The breadth of LED applications has grown to encompass everything from general lighting to automotive, industrial and test equipment, sign boards and safety instruments. Feature requirements for LED drivers have become more extensive. The latest LED solutions require drivers that are compact, ...

Blog Post 

 

3A, 1MHz Buck Mode LED Driver with Integrated Voltage Limiting

Matthew Grant - Sr Design Eng Oct 3rd 2016
Design Note DN556: Introduction The LT3952 monolithic LED driver includes a 4A, 60V DMOS power switch, excellent for driving high current LEDs in buck mode. Among its many features is an input current sense amplifier, which can be leveraged to provide built-in LED voltage limiting in buck mode.   In buck mode, the ...

Blog Post 

 

36V, 2A Monolithic Synchronous Step-Up Silent Switcher LED Driver

Sep 19th 2016
MILPITAS, CA – September 19, 2016 – The LT3922 is a monolithic, synchronous, step-up DC/DC converter with internal 40V, 2A power switches and an internal PWM generator. Its fixed frequency peak current mode control accurately regulates current within ±2% for a string of LEDs up to 34V. Its integrated PWM generator ...

Press Release 

 

LT3517 Buck Mode 1A LED Driver

Sep 13th 2016
The LT3517 is a current mode DC/DC converter with an internal 1.5A, 45V switch specifically designed to drive LEDs. The LT3517 operates as a LED driver in boost, buck mode and buck-boost mode. It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or constant-voltage source. ...

Circuit 

 

LT3517 350mA, 5V to 12V Boost Converter with Accurate Input Current Limit

Sep 13th 2016
The LT3517 is a current mode DC/DC converter with an internal 1.5A, 45V switch specifically designed to drive LEDs. The LT3517 operates as a LED driver in boost, buck mode and buck-boost mode. It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or constant-voltage source. ...

Circuit 

 

LT3517 Low Side current Sensing Load Dump Protected Buck-Boost Mode LED Driver

Sep 13th 2016
The LT3517 is a current mode DC/DC converter with an internal 1.5A, 45V switch specifically designed to drive LEDs. The LT3517 operates as a LED driver in boost, buck mode and buck-boost mode. It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or constant-voltage source. ...

Circuit 

 

LT3517 Boost 100mA LED Driver with LED Open Protection

Sep 13th 2016
The LT3517 is a current mode DC/DC converter with an internal 1.5A, 45V switch specifically designed to drive LEDs. The LT3517 operates as a LED driver in boost, buck mode and buck-boost mode. It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or constant-voltage source. ...

Circuit 

 

LT3517 5.5V SEPIC Convener with Short-Circuit Protection

Sep 13th 2016
The LT3517 is a current mode DC/DC converter with an internal 1.5A, 45V switch specifically designed to drive LEDs. The LT3517 operates as a LED driver in boost, buck mode and buck-boost mode. It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or constant-voltage source. ...

Circuit 

 

LT3599 12W LED Driver 1MHz Boost, 80mA per String, 10 LEDs per String

Sep 9th 2016
The LT3599 is a fixed frequency 2A step-up DC/DC converter designed to drive four strings of 120mA LEDs up to a 44V output voltage. The switching frequency is programmable from 200kHz to 2.1MHz through an external resistor. ...

Circuit 

 

LT3599 12W LED Driver 400kHz Boost, Two LED Strings, 200mA per String, 8 LEDs per String

Sep 9th 2016
The LT3599 is a fixed frequency 2A step-up DC/DC converter designed to drive four strings of 120mA LEDs up to a 44V output voltage. The switching frequency is programmable from 200kHz to 2.1MHz through an external resistor. ...

Circuit 

 

LT3599 7W LED Driver SEPIC (Survives Output Short to Ground) 300kHz, Three Strings, 100mA per String, 6 LEDs per String

Sep 9th 2016
The LT3599 is a fixed frequency 2A step-up DC/DC converter designed to drive four strings of 120mA LEDs up to a 44V output voltage. The switching frequency is programmable from 200kHz to 2.1MHz through an external resistor. ...

Circuit 

 

LT3599 8W LED Driver 2MHz Boost, Three Strings, 100mA per String, 7 LEDs per String

Sep 9th 2016
The LT3599 is a fixed frequency 2A step-up DC/DC converter designed to drive four strings of 120mA LEDs up to a 44V output voltage. The switching frequency is programmable from 200kHz to 2.1MHz through an external resistor. ...

Circuit 

 

LT3599 2.1 MHz Boost, Four Strings, 80mA per String, 7 LEDs per String

Sep 9th 2016
The LT3599 is a fixed frequency 2A step-up DC/DC converter designed to drive four strings of 120mA LEDs up to a 44V output voltage. The switching frequency is programmable from 200kHz to 2.1MHz through an external resistor. ...

Circuit 

 

LT3795 Short-Circuit Robust Boost LED Driver with Input Current Limit and Spread Spectrum Frequency Modulation

Sep 8th 2016
The LT®3795 is a DC/DC controller designed to regulate a constant-current or constant-voltage and is ideal for driving LEDs. It drives a low side external N-channel power MOSFET from an internal regulated 7.7V supply. The fixed frequency and current mode architecture result in stable operation over a wide range of supply ...

Circuit 

 

LT3795 SEPIC LED Driver with Input Current Limit

Sep 8th 2016
The LT®3795 is a DC/DC controller designed to regulate a constant-current or constant-voltage and is ideal for driving LEDs. It drives a low side external N-channel power MOSFET from an internal regulated 7.7V supply. The fixed frequency and current mode architecture result in stable operation over a wide range of supply ...

Circuit 

 

LT3795 Buck Mode LED Driver

Sep 8th 2016
The LT®3795 is a DC/DC controller designed to regulate a constant-current or constant-voltage and is ideal for driving LEDs. It drives a low side external N-channel power MOSFET from an internal regulated 7.7V supply. The fixed frequency and current mode architecture result in stable operation over a wide range of supply ...

Circuit 

 

LT3795 Buck Mode LED Driver with 3000:1 PWM Dimming

Sep 8th 2016
The LT®3795 is a DC/DC controller designed to regulate a constant-current or constant-voltage and is ideal for driving LEDs. It drives a low side external N-channel power MOSFET from an internal regulated 7.7V supply. The fixed frequency and current mode architecture result in stable operation over a wide range of supply ...

Circuit 

 

LT3518 Buck Mode 1.5A LED Driver

Sep 8th 2016
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 mode and buck-boost mode. It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or constant-voltage source. ...

Circuit 

 

LT3518 Buck-Boost Mode LED Driver

Sep 8th 2016
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 mode and buck-boost mode. It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or constant-voltage source. ...

Circuit 

 

LT3518 Buck Mode 1A LED Driver with Open LED Protection and Sync Input

Sep 8th 2016
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 mode and buck-boost mode. It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or constant-voltage source. ...

Circuit 

 

LT3518 Boost 300mA LED Driver with LED Open Protection

Sep 8th 2016
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 mode and buck-boost mode. It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or constant-voltage source. ...

Circuit 

 

LT3755 20W SEPIC LED Driver

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 

 

LT3755 Buck Mode 1.4A LED Driver

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 

 

LT3755 Buck Mode 500mA LED Driver for 20kHz PWM Dimming

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 

 

LT3755 21W Buck-Boost Mode with 250:1 PWM Dimming and Open LED Protection

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 

 

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 

 

LT3756 Buck-Boost Mode LED Driver

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 

 

LT3756 90% Efficient, 20W SEPIC LED Driver

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 

 

LT3756 Buck Mode 1A LED Driver with High Dimming Ratio and Open LED Reporting

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 

 

LT3965 Matrix LED Dimmer Powered by a Boost-Buck LED Driver

Sep 2nd 2016
The LT®3965 is an LED bypass switching device for dimming individual LEDs in a string using a common current source. It features eight individually controlled floating source 17V/330mΩ NMOS switches. The eight switches can be connected in parallel and/or in series to bypass current around one or more LEDs in a string. ...

Circuit 

 

LT3763 20A, Pulse Width Modulated, Single LED Driver

Sep 2nd 2016
The LT3763 is a fixed frequency, synchronous, step-down DC/DC controller designed to accurately regulate output currents up to 20A. The average current mode control- ler will maintain inductor current regulation over a wide output voltage range from 0V to 55V. Output current is set by analog voltages on the CTRL pins and an ...

Circuit 

 

LT3763 1A, Five LED Driver

Sep 2nd 2016
The LT3763 is a fixed frequency, synchronous, step-down DC/DC controller designed to accurately regulate output currents up to 20A. The average current mode control- ler will maintain inductor current regulation over a wide output voltage range from 0V to 55V. Output current is set by analog voltages on the CTRL pins and an ...

Circuit 

 

LT3763 350W White LED Driver

Sep 2nd 2016
The LT3763 is a fixed frequency, synchronous, step-down DC/DC controller designed to accurately regulate output currents up to 20A. The average current mode control- ler will maintain inductor current regulation over a wide output voltage range from 0V to 55V. Output current is set by analog voltages on the CTRL pins and an ...

Circuit 

 

LT3922 Low EMI 400kHz, 96°/o Eificient 10W (30V, 333mA) Boost LED Driver with SSFM

Aug 31st 2016
The LT3922 is a monolithic, synchronous, step-up DC/DC converter that utilizes fixed-frequency, peak current control and provides PWM dimming for a string of LEDs. The LED current is programmed by an analog voltage or the duty cycle of pulses at the CTRL pin. The LT3922 will maintain ±2% current regulation through an ...

Circuit 

 

LT3922 500mA Boost LED Driver Using Pulse Duty Cycle CTRL Input

Aug 31st 2016
The LT3922 is a monolithic, synchronous, step-up DC/DC converter that utilizes fixed-frequency, peak current control and provides PWM dimming for a string of LEDs. The LED current is programmed by an analog voltage or the duty cycle of pulses at the CTRL pin. The LT3922 will maintain ±2% current regulation through an ...

Circuit 

 

LT3922 2MHZ, 95% Efficient 15W (15V, 1A) Buck Mode LED Driver

Aug 31st 2016
The LT3922 is a monolithic, synchronous, step-up DC/DC converter that utilizes fixed-frequency, peak current control and provides PWM dimming for a string of LEDs. The LED current is programmed by an analog voltage or the duty cycle of pulses at the CTRL pin. The LT3922 will maintain ±2% current regulation through an ...

Circuit 

 

LT3922 500mA, 5V to 12V Boost Convener with Accurate Input Current Limit

Aug 31st 2016
The LT3922 is a monolithic, synchronous, step-up DC/DC converter that utilizes fixed-frequency, peak current control and provides PWM dimming for a string of LEDs. The LED current is programmed by an analog voltage or the duty cycle of pulses at the CTRL pin. The LT3922 will maintain ±2% current regulation through an ...

Circuit 

 

LT3922 Low EMI 2MHZ, 333mA Boost LED Driver with SSFM

Aug 31st 2016
The LT3922 is a monolithic, synchronous, step-up DC/DC converter that utilizes fixed-frequency, peak current control and provides PWM dimming for a string of LEDs. The LED current is programmed by an analog voltage or the duty cycle of pulses at the CTRL pin. The LT3922 will maintain ±2% current regulation through an ...

Circuit 

 

A New Era in Space Products - Radiation Tolerant

T.J. Fure - Product Marketing Manager
Gabino Alonso - Strategic Marketing Engineer
Mar 23rd 2016
Recent developments have made doing business in space ever more achievable to a broadening base of companies. A market previously consisting solely of major defense contractors and national governments has been disrupted by a growing list of commercial companies determined to deploy an enterprise beyond the confines of our terrestrial ...

Blog Post 

 

60V 8-Switch Matrix LED Dimmer

Keith Szolusha - Applications Engineering Section Leader Nov 10th 2015
LEDs are being used in current luxury model automotive headlights. Future automotive headlight designs include more powerful LEDs, more LEDs, and highly animated and multifunctional LED strings. These “matrix” LED headlights have the ability to change brightness and patterns. They allow control of individual LEDs ...

Video 

 

Spread Spectrum Frequency Modulation Reduces EMI

Kevin B. Scott - Senior Strategic Marketing Engineer
Greg Zimmer - Senior Product Marketing Engineer
Nov 4th 2015
Electromagnetic Radiation (EMR), Electromagnetic Interference (EMI) and Electromagnetic Compliance (EMC) are terms that pertain to energy from electrically charged particles and the associated magnetic fields that can potentially interfere with circuit performance and signal transmissions. With the proliferation of wireless ...

Blog Post 

 

Dual String 2MHz Boost 50mA LED Driver

Oct 20th 2015
MILPITAS, CA - October 20, 2015 - Linear Technology announces the LT3909, a high efficiency, constant current LED driver that can drive two strings of up to 10 LEDs at 50mA. To ensure constant brightness, each LED string contains an accurate high side current source with ±1.8% current matching. Its input voltage range of 2.9V ...

Press Release 

 

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 

 

LT3952 Short-Circuit Robust Boost LED Driver with Spread Spectrum Frequency Modulation

Sep 8th 2015
The LT®3952 is a current mode step-up DC/DC converter with an internal, 60V, 80mΩ DMOS power switch. The LT3952 is specifically designed to drive high power LEDs in multiple configurations. It combines input and output current regulation loops with output voltage regulation to operate as a flexible current/voltage ...

Circuit 

 

LT3952 SEPIC LED Driver with Input Current Limit

Sep 8th 2015
The LT®3952 is a current mode step-up DC/DC converter with an internal, 60V, 80mΩ DMOS power switch. The LT3952 is specifically designed to drive high power LEDs in multiple configurations. It combines input and output current regulation loops with output voltage regulation to operate as a flexible current/voltage ...

Circuit 

 

LT3952 2MHz Boost LED Driver with 4000:1 PWM Dimming and Overvoltage Protection

Sep 8th 2015
The LT®3952 is a current mode step-up DC/DC converter with an internal, 60V, 80mΩ DMOS power switch. The LT3952 is specifically designed to drive high power LEDs in multiple configurations. It combines input and output current regulation loops with output voltage regulation to operate as a flexible current/voltage ...

Circuit 

 

LT3952 3MHz Buck-Boost LED Driver with Internal PWM Dimming and Fade Start

Sep 8th 2015
The LT®3952 is a current mode step-up DC/DC converter with an internal, 60V, 80mΩ DMOS power switch. The LT3952 is specifically designed to drive high power LEDs in multiple configurations. It combines input and output current regulation loops with output voltage regulation to operate as a flexible current/voltage ...

Circuit 

 

LT3952 3A Buck Mode LED Driver

Sep 8th 2015
The LT®3952 is a current mode step-up DC/DC converter with an internal, 60V, 80mΩ DMOS power switch. The LT3952 is specifically designed to drive high power LEDs in multiple configurations. It combines input and output current regulation loops with output voltage regulation to operate as a flexible current/voltage ...

Circuit 

 

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 

 

LT3761 40W SEPIC LED Driver

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 

 

LT3761 10W Grounded Anode Inverting LED Driver

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 

 

LT3761 Boost LED Driver for 30kHz 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 

 

LT3761 Buck Mode 5A LED Driver for 40kHz 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 

 

LT3761 80W High Voltage Boost LED Driver with 25:1 Internally Generated 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 

 

LT3796 Boost LED Driver for Twin LEDs with Detection and Protection for Faulty LED

Sep 1st 2015
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 

 

LT3909 2-String × 20mA Driver for Seven White LEDs/String

Aug 27th 2015
The LT®3909 is a 2-string × 50mA LED driver with a fixed 2MHz step-up DC/DC converter capable of driving up to 36V of LEDs. Each LED string contains an accurate high-side current source with ±1.8% current matching. Output voltage adapts to variations in LED VF for optimum efficiency. ...

Circuit 

 

LT3909 2-String × 40mA Buck-Boost Mode Driver for Five White LEDs/String

Aug 27th 2015
The LT®3909 is a 2-string × 50mA LED driver with a fixed 2MHz step-up DC/DC converter capable of driving up to 36V of LEDs. Each LED string contains an accurate high-side current source with ±1.8% current matching. Output voltage adapts to variations in LED VF for optimum efficiency. ...

Circuit 

 

LT3909 12V Input, 1 String × 100mA Driver for Ten White LEDs

Aug 27th 2015
The LT®3909 is a 2-string × 50mA LED driver with a fixed 2MHz step-up DC/DC converter capable of driving up to 36V of LEDs. Each LED string contains an accurate high-side current source with ±1.8% current matching. Output voltage adapts to variations in LED VF for optimum efficiency. ...

Circuit 

 

LT3909 2-String × 20mA, 2MHz LED Driver for Ten White LEDs/String

Aug 27th 2015
The LT®3909 is a 2-string × 50mA LED driver with a fixed 2MHz step-up DC/DC converter capable of driving up to 36V of LEDs. Each LED string contains an accurate high-side current source with ±1.8% current matching. Output voltage adapts to variations in LED VF for optimum efficiency. ...

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 

 

60V LED Driver with Internal 4A Switch & PWM Generator

Apr 13th 2015
MILPITAS, CA - April 13, 2015 - The LT3952 is a current mode step-up DC/DC converter with an internal 60V, 4A DMOS power switch. It is specifically designed to drive high power LEDs in multiple configurations. It combines input and output current regulation loops with output voltage regulation to operate as a flexible current/voltage ...

Press Release 

 

60V LED Driver with Internal 4A Switch for Automotive Lighting

Keith Szolusha - Applications Engineering Section Leader Mar 31st 2015
LED lighting is an important feature in today’s and future automobile designs. LED lighting is efficient, robust, attractive, and artistic. LED lighting is used in many different ways in a vehicle, namely high and low beam headlights, daytime running lights, signal lighting, brake lights, dashboard displays, heads up displays, ...

Video 

 

LT3763 3.3A, Six-Cell (36V) SLA Battery Charger

Jan 9th 2015
The LT3763 is a fixed frequency, synchronous, step-down DC/DC controller designed to accurately regulate output currents up to 20A. The average current mode control- ler will maintain inductor current regulation over a wide output voltage range from 0V to 55V. Output current is set by analog voltages on the CTRL pins and an ...

Circuit 

 

LT3796 SEPIC Sealed Lead Acid (SLA) Battery Charger

Sep 23rd 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 

 

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 

 

LT3763 7-30Vin, 5Vout@20A Synchronous Step Down

Aug 8th 2014
The LT3763 is a fixed frequency, synchronous, step-down DC/DC controller designed to accurately regulate output currents up to 20A. The average current mode control- ler will maintain inductor current regulation over a wide output voltage range from 0V to 55V. Output current is set by analog voltages on the CTRL pins and an ...

Circuit 

 

Spread Spectrum Frequency Modulation Reduces Automotive LED Driver EMI

Keith Szolusha - Applications Engineering Section Leader Dec 30th 2013
The large number of electronics in an automobile must have reasonably low electromagnetic interference (EMI) in order to avoid disturbing the radio reception, GPS navigation tools and other forms of communication and broadcast. Switch mode regulators are commonly used in this environment and they have to be designed to mitigate ...

Video 

 

Meet Green Standards in 24VAC and 12VAC Lighting Systems: Replace Halogen Bulbs with LEDs Driven by High Power Factor, High Efficiency Converter

Keith Szolusha - Applications Engineering Section Leader Oct 17th 2013
LEDs are increasingly used in 24VAC and 12VAC lighting systems as a robust, energy efficient and high performance alternative to halogen lamps. Power converters that drive the LEDs should have a high power factor (above 90% in order to meet generally accepted green standards), should be efficient, use a minimal number of components ...

Blog Post 

 

110V LED Controller with Spread Spectrum Frequency Modulation & Robust Short-Circuit Protection

Sep 19th 2013
MILPITAS, CA – September 19, 2013 – Linear Technology announces the LT3795, a 110V, high-side current sense DC/DC converter designed to regulate a current or voltage to a constant value, ideal for driving high brightness (HB) LEDs. Its 4.5V to 110V input voltage range makes it appropriate for a wide variety of applications, ...

Press Release 

 

DC1827A - LT3795 Demo Board | 110V LED Controller; 8V to 60Vin, 87Vout @ 0.4A, Spread Spectrum Frequency Modulation

Sep 10th 2013
Demonstration Circuit 1827A features a 110V LED controller with spread spectrum frequency modulation - the LT®3795. Unlike most boosts, the circuit disconnects the output to protect against shorts or other fault conditions when the input voltage exceeds the output. The input voltage range for normal operation is from 8V ...

Demo Board LTspice 

 

60V, LED Controller with Internal PWM Generator for Boost, Buck or Buck-Boost High Current LED Applications

Dec 3rd 2012
MILPITAS, CA – December 3, 2012 – Linear Technology announces the LT3761, a 60V DC/DC controller designed to operate as a constant-current source and constant-voltage regulator. Its internal PWM dimming generator makes it ideal for driving high current LEDs, but it also has features making it suitable for charging batteries ...

Press Release 

 

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 

 

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