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Solutions Search - Ultralow Noise Regulators

Hybrid Wide Dimming Ratio Linear LED Current Controller Using LT8614 & LT3083/LT6015

Tom Mosteller - Field Applications Engineer Oct 17th 2016
Many applications for LED illumination require wide dimming ratios. This can be accomplished simply via an adjustable current source as show below.  The current source can be varied by a number of different means, and a large LED current range can be achieved. The primary problem with this technique is that the power dissipation ...

Blog Post Circuit LTspice 

 

LT8640 2MHz 5V, 5A Step-Down Converter with Low EMI

Jun 25th 2015
The LT®8640 step-down regulator features Silent Switcher architecture designed to minimize EMI/EMC emissions while delivering high efficiency at frequencies up to 3MHz. Assembled in a 3mm × 4mm QFN, the monolithic construction with integrated power switches and inclusion of all necessary circuitry yields a solution ...

Circuit 

 

LT8640 2MHz 3.3V, 5A Step-Down Converter with Low EMI

Jun 25th 2015
The LT®8640 step-down regulator features Silent Switcher architecture designed to minimize EMI/EMC emissions while delivering high efficiency at frequencies up to 3MHz. Assembled in a 3mm × 4mm QFN, the monolithic construction with integrated power switches and inclusion of all necessary circuitry yields a solution ...

Circuit 

 

LT8640 12V, 5A Step-Down Converter with Low EMI

Jun 25th 2015
The LT®8640 step-down regulator features Silent Switcher architecture designed to minimize EMI/EMC emissions while delivering high efficiency at frequencies up to 3MHz. Assembled in a 3mm × 4mm QFN, the monolithic construction with integrated power switches and inclusion of all necessary circuitry yields a solution ...

Circuit 

 

LT8640 2MHz 1.8V, 5A Step-Down Converter with Low EMI

Jun 25th 2015
The LT®8640 step-down regulator features Silent Switcher architecture designed to minimize EMI/EMC emissions while delivering high efficiency at frequencies up to 3MHz. Assembled in a 3mm × 4mm QFN, the monolithic construction with integrated power switches and inclusion of all necessary circuitry yields a solution ...

Circuit 

 

LT3999 12V to 12V, 10W Low Noise Isolated DC/DC Converter

Sep 12th 2014
The LT®3999 is a monolithic, high voltage, high frequency DC/DC transformer driver providing isolated power in a small solution footprint. ...

Circuit 

 

LT3999 5V to 12V, 10W Low Power Push-Pull DC Transformer

Sep 12th 2014
The LT®3999 is a monolithic, high voltage, high frequency DC/DC transformer driver providing isolated power in a small solution footprint. ...

Circuit 

 

Altera Audio Video Development Kit, Stratix IV GX Edition

Jun 12th 2014
The Audio Video Development Kit, Stratix IV GX Edition, delivers a complete video and image processing development environment for design engineers. The kit facilitates the entire design process, from design conception through hardware implementation. This kit includes the Stratix IV EP4SGX230 FPGA development ...

Circuit 

 

Altera Stratix IV GX FPGA Development Kit

Jun 12th 2014
The Altera Stratix IV GX FPGA Development Kit delivers a complete system-level design environment that includes both the hardware and software needed to immediately begin developing FPGA designs. With this PCI-SIG-compliant board and a one-year license for Quartus II design software, you can develop and test PCI Express ...

Circuit 

 

Terasic TR4 Stratix IV Board

Jun 5th 2014
The TR4 Development Kit provides the ideal hardware platform for system designs that demandhigh-performance, serial connectivity, and advanced memory interfacing. The TR4 is poweredby the Stratix IV GX device and supported by industry-standard peripherals, connectors andinterfaces that offer a rich set of features that is suitable ...

Circuit 

 

LT8614 2MHz 1.8V, 4A Step-Down Converter

Jul 2nd 2013
The LT8614 step-down regulator features Silent Switcher architecture designed to minimize EMI/EMC emissions while delivering high efficiency at frequencies up to 3MHz. Assembled in a 3mm × 4mm QFN, the monolithic construction with integrated power switches and inclusion of all necessary circuitry yields a solution with ...

Circuit 

 

LT8614 2MHz 3.3V, 4A Step-Down Converter

Jul 2nd 2013
The LT8614 step-down regulator features Silent Switcher architecture designed to minimize EMI/EMC emissions while delivering high efficiency at frequencies up to 3MHz. Assembled in a 3mm × 4mm QFN, the monolithic construction with integrated power switches and inclusion of all necessary circuitry yields a solution with ...

Circuit 

 

LT8614 12V, 4A Step-Down Converter

Jul 2nd 2013
The LT®8614 step-down regulator features Silent Switcher architecture designed to minimize EMI/EMC emissions while delivering high efficiency at frequencies up to 3MHz. Assembled in a 3mm × 4mm QFN, the monolithic construction with integrated power switches and inclusion of all necessary circuitry yields a solution ...

Circuit 

 

LTM8028 1V at 5A Regulator

Apr 29th 2013
The LTM®8028 is a 36VIN, 5A μModule® regulator, consisting of an UltraFast™ 5A linear regulator preceded by a high efficiency switching regulator. In addition to providing tight output regulation, the linear regulator automatically controls the output voltage of the switcher to provide optimal efficiency and ...

Circuit 

 

LTM8028 1.8V, 10A with Two LTM8028s Powered from Two Different Sources Each uModu|e Regulator Is Limited to Provide a Maximum of 5A

Apr 29th 2013
The LTM®8028 is a 36VIN, 5A μModule® regulator, consisting of an UltraFast™ 5A linear regulator preceded by a high efficiency switching regulator. In addition to providing tight output regulation, the linear regulator automatically controls the output voltage of the switcher to provide optimal efficiency and ...

Circuit 

 

LTM8028 1.8V Regulator with 3.5A Current Limit

Apr 29th 2013
The LTM®8028 is a 36VIN, 5A μModule® regulator, consisting of an UltraFast™ 5A linear regulator preceded by a high efficiency switching regulator. In addition to providing tight output regulation, the linear regulator automatically controls the output voltage of the switcher to provide optimal efficiency and ...

Circuit 

 

LTM8028 Low Output Noise, 1.2V, 5A uModu|e Regulator

Apr 29th 2013
The LTM®8028 is a 36VIN, 5A μModule® regulator, consisting of an UltraFast™ 5A linear regulator preceded by a high efficiency switching regulator. In addition to providing tight output regulation, the linear regulator automatically controls the output voltage of the switcher to provide optimal efficiency and ...

Circuit 

 

LTM8033 5V at 3A Step-Down Converter

Jul 9th 2010
The LTM®8033 is an electromagnetic compatible (EMC) 36V, 3A DC/DC μModule® buck converter designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controller, power switches, inductor, ...

Circuit 

 

LTM8033 8V at 3A Step-Down Converter

Jul 9th 2010
The LTM®8033 is an electromagnetic compatible (EMC) 36V, 3A DC/DC μModule® buck converter designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controller, power switches, inductor, ...

Circuit 

 

LTM8033 0.8V at 3A Step-Down Converter

Jul 9th 2010
The LTM®8033 is an electromagnetic compatible (EMC) 36V, 3A DC/DC μModule® buck converter designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controller, power switches, inductor, ...

Circuit 

 

LTM8033 Current Sharing Two LTM8033 Parts

Jul 9th 2010
The LTM®8033 is an electromagnetic compatible (EMC) 36V, 3A DC/DC μModule® buck converter designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controller, power switches, inductor, ...

Circuit 

 

LTM8033 2.5V at 3A Step-Down Converter

Jul 9th 2010
The LTM®8033 is an electromagnetic compatible (EMC) 36V, 3A DC/DC μModule® buck converter designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controller, power switches, inductor, ...

Circuit 

 

LTM8033 1.8V at 3A Step-Down Converter

Jul 9th 2010
The LTM®8033 is an electromagnetic compatible (EMC) 36V, 3A DC/DC μModule® buck converter designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controller, power switches, inductor, ...

Circuit 

 

LTM8033 Ultralow Noise 12V/3A DC/DC μModule Regulator

Jul 9th 2010
The LTM®8033 is an electromagnetic compatible (EMC) 36V, 3A DC/DC μModule® buck converter designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controller, power switches, inductor, ...

Circuit 

 

LTM8032 Ultralow Noise 5V/2A DC/DC μModule Regulator

Feb 10th 2009
The LTM®8032 is an electromagnetic compatible (EMC) 36V, 2A DC/DC step-down μModule® regulator designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controller, power switches, inductor, ...

Circuit LTspice 

 

LTM4612 26V to 36VIN, 15V at 4A Design with Reduced Frequency

Aug 8th 2008
The LTM®4612 is a EN55022 Class B certified high voltage input and output, 5A switching mode DC/DC power supply. Included in the package are the switching controller, power FETs, inductor and all support components. Operating over an input voltage range of 5V to 36V, the LTM4612 supports an output voltage range of 3.3V to ...

Circuit 

 

LTM4612 High Density 5A High Voltage Low Noise Step-Down Regulator

Aug 8th 2008
The LTM®4612 is a EN55022 Class B certified high voltage input and output, 5A switching mode DC/DC power supply. Included in the package are the switching controller, power FETs, inductor and all support components. Operating over an input voltage range of 5V to 36V, the LTM4612 supports an output voltage range of 3.3V to ...

Circuit LTspice 

 

LTM8021 3.3V at 500mA Step-Down Converter

May 13th 2008
The LTM8021 is a 36VIN 500mA, step-down DC/DC μModule. Included in the package are the switching controller, power switches, inductor, and all support components. Operating over an input voltage range of 3V to 36V, the LTM8021 supports an output voltage range of 0.8V to 5V, set by a single resistor. Only an output and bulk ...

Circuit 

 

LTM8021 0.8V Step-Down Converter

May 13th 2008
The LTM8021 is a 36VIN 500mA, step-down DC/DC μModule. Included in the package are the switching controller, power switches, inductor, and all support components. Operating over an input voltage range of 3V to 36V, the LTM8021 supports an output voltage range of 0.8V to 5V, set by a single resistor. Only an output and bulk ...

Circuit 

 

LTM8021 –5V Positive-to-Negative Converter

May 13th 2008
The LTM8021 is a 36VIN 500mA, step-down DC/DC μModule. Included in the package are the switching controller, power switches, inductor, and all support components. Operating over an input voltage range of 3V to 36V, the LTM8021 supports an output voltage range of 0.8V to 5V, set by a single resistor. Only an output and bulk ...

Circuit 

 

LTM8021 1.8V Step-Down Converter

May 13th 2008
The LTM8021 is a 36VIN 500mA, step-down DC/DC μModule. Included in the package are the switching controller, power switches, inductor, and all support components. Operating over an input voltage range of 3V to 36V, the LTM8021 supports an output voltage range of 0.8V to 5V, set by a single resistor. Only an output and bulk ...

Circuit 

 

LTM8020 1.25V 200mA uModule Step-Down Converter

Oct 29th 2007
The LTM8020 is a complete 200mA, DC/DC step-down power supply. Included in the package are the switching controller, power switches, inductor, and all support components. Operating over an input voltage range of 4V to 36V, the LTM8020 supports an output voltage range of 1.25V to 5V, set by a single resistor. Only bulk capacitors ...

Circuit 

 

LTM8020 –5V uModule Positive-to-Negative Converter

Oct 29th 2007
The LTM8020 is a complete 200mA, DC/DC step-down power supply. Included in the package are the switching controller, power switches, inductor, and all support components. Operating over an input voltage range of 4V to 36V, the LTM8020 supports an output voltage range of 1.25V to 5V, set by a single resistor. Only bulk capacitors ...

Circuit 

 

LTM8020 5V 200mA uModule Step-Down Converter (No Output Capacitor Required)

Oct 29th 2007
The LTM8020 is a complete 200mA, DC/DC step-down power supply. Included in the package are the switching controller, power switches, inductor, and all support components. Operating over an input voltage range of 4V to 36V, the LTM8020 supports an output voltage range of 1.25V to 5V, set by a single resistor. Only bulk capacitors ...

Circuit 

 

LTM8020 1.8V 200mA uModule Step-Down Converter

Oct 29th 2007
The LTM8020 is a complete 200mA, DC/DC step-down power supply. Included in the package are the switching controller, power switches, inductor, and all support components. Operating over an input voltage range of 4V to 36V, the LTM8020 supports an output voltage range of 1.25V to 5V, set by a single resistor. Only bulk capacitors ...

Circuit 

 

LTM4612 2-Phase, Parallel 12V at 10A Design

Mar 24th 2006
The LTM®4612 is a EN55022 Class B certified high voltage input and output, 5A switching mode DC/DC power supply. Included in the package are the switching controller, power FETs, inductor and all support components. Operating over an input voltage range of 5V to 36V, the LTM4612 supports an output voltage range of 3.3V to ...

Circuit 

 

LT3439 Low Noise 5V to 5V Push-Pull DC/DC Transformer

Jul 22nd 2002
The LT3439 is a push-pull DC/DC transformer driver that reduces conducted and radiated electromagnetic interference (EMI). Ultralow noise and EMI are achieved by controlling the output switch voltage and current slew rates. Slew rates are user adjustable to optimize output noise versus efficiency. The LT3439 can reduce high ...

Circuit LTspice 

 

24Vin to 5Vout @ 400mA Low Noise Slew Rate Controlled Step-Down Supply

Feb 25th 1999
The LT1777 is a Buck (step-down) regulator designed for noise sensitive applications. It contains a dI/dt limiting circuit programmed via a small external inductor in the switching path. Internal circuitry also generates controlled dV/dt ramp rates. ...

Circuit 

 

Royer Topology Achieves 100μVp-p Noise at 250V Output

Dec 3rd 1997
This circuit's resonant Royer topology achieves 100μVP-P noise at 250V output by minimizing high frequency harmonic in the power drive stage. The self oscillating resonant Royer circuitry is composed of Q2, Q3, C1, T1 and L1. Current flow through L1 causes the T1, Q2, Q3, C1 circuitry to oscillate in resonant fashion, supplying ...

Circuit