Circuits & Schematics Linear Technology - 9

81. 60V Buck-Boost LED Driver with Up to 98% Efficiency Has Internal PWM Dimming and Spread Spectrum
    Keith Szolusha
    Circuits Supply Light Linear Technology LT8391
    Design Note 548 Synchronous buck-boost converters with four power switches can deliver very high efficiency while providing both step-up and step-down DC/DC conversion. Combining the capabilities of two separate converters (buck and boost) has the ...
    Oct 18, 2016
82. High Voltage CMOS Amplifier Enables High Impedance Sensing with a Single IC
    Jon Munson
    Circuits Analogue Design High Voltage Measurement Linear Technology LTC6090 LT5400 LT6654 LT8300 CMHZ4697
    Introduction Accurately measuring voltages requires minimizing the impact of the instrument connection to the tested circuit. Typical digital voltmeters (DVMs) use 10 M resistor networks to keep loading effects to an inconspicuous level, but even ...
    Oct 10, 2016

83. Monolithic Converter Delivers High Output Voltages
    Circuits High Voltage Supply Power Linear Technology LT8331
    Jesus Rosales, Linear Technology Design Note 545 Introduction Industrial, telecom, medical and automotive applications use a wide variety of regulated voltages to operate effectively, including high voltage and negative rails. When the designer is ...
    Sep 6, 2016
84. Ultrathin Dual 2.5 A or Single 5 A μModule Regulator Fits on the Backside of PCBs, Allowing Space on the Topside for Digital ICs
    Circuits Supply Power Linear Technology LTM4622
    Sam Young, Afshin Odabaee Linear Technology Design Note 546 Introduction The top side of a typical system board, such as a PCIe card, is densely populated with FPGAs/ASICs/ microprocessors, transceivers, connectors, memory ICs and DC/DC regulators, ...
    Aug 2, 2016
85. Easily Boost 12 V to 140 V with a Single Converter IC
    Victor Khasiev
    Circuits Supply Linear Technology LTC3788
    Introduction Generating a high voltage from a much lower voltage presents a number of challenges for the classical single stage boost topology. For instance, the maximum duty cycle limitation of a boost controller may not allow the required step-up ...
    Jul 7, 2016
86. μModule LED Driver Integrates All Circuitry, Including the Inductor, in a Surface Mount Package
    David Ng
    Circuits Light Power Linear Technology LTM8040
    Design Note 445 Introduction Once relegated to the hinterlands of low cost indicator lights, the LED is again in the spotlight of the lighting world. LED lighting is now ubiquitous, from car headlights to USB-powered lava lamps. Car headlights ...
    Jun 28, 2016
87. Wide-range voltage regulator automatically selects operating mode
    Circuits Supply Power Linear Technology LT1072HV
    Joel Shetton EDN The circuit in Figure 1 delivers programming voltages to an EEPROM under the control of an external DAC (not shown). You can replace the DAC with a potentiometer to create a general-purpose power supply operating from 12 V and able ...
    May 25, 2016
88. Low Power, Precision Op Amp Simplifies Driving of MUXed ADCs
    Circuits Analogue Design Linear Technology LTC2372-18 LT6016
    Guy Hoover, Linear Technology Design Note 1034 Introduction The high speed op amps required to buffer a modern 16 /18-bit analog-to-digital converter (ADC) typically dissipate as much power as the ADC itself, often with a maximum offset spec of ...
    May 25, 2016
89. Series-LC-tank VCO Breaks Tuning-Range Records
    Louis Vlemincq
    Circuits Analogue Design Oscillators Linear Technology LT1077
    This Design Idea applies a novel topology to an oscillator. It uses a series-connected LC (inductive-capacitive) tank circuit to give the circuit a higher tuning range than circuits that use a parallel-LC connection. The architecture of the ...
    May 12, 2016
90. Robust 140 V VIN, 400 mA Step-Down Regulator for Industrial, Telecom and Automotive Environments
    Circuits Automotive Power Linear Technology LTC7138
    Mike Shriver, Linear Technology Design Note 543 The LTC7138 is a 400 mA step-down regulator that can operate over an input voltage range of 4 V to 140 V, ideal for industrial, telecom, automotive and other applications subject to harsh line ...
    Apr 28, 2016

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