All Sections: LT - 7

61. Wide-range voltage regulator automatically selects operating mode
    Circuits 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

62. 42V, 3.5A (IOUT) Synchronous Step-Down Regulator with Operation to 175°C
    News Linear Technology LT8610AX
    Linear Technology Corporation announces the LT8610AX , a 3.5 A, 42 V input capable synchronous step-down switching regulator, which operates in ambient temperatures up to 175 C. Synchronous rectification delivers efficiency as high as 95% while ...
    Jun 22, 2016

63. Monolithic Converter Delivers High Output Voltages
    Circuits 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
64. High Voltage CMOS Amplifier Enables High Impedance Sensing with a Single IC
    Jon Munson
    Circuits 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
65. 60V Buck-Boost LED Driver with Up to 98% Efficiency Has Internal PWM Dimming and Spread Spectrum
    Keith Szolusha
    Circuits 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
66. Active load handles high voltages
    Circuits Linear Technology LT1243
    Gheorghe Plasoianu EDN Bench electronic loads are usually rated for voltages less than 100 V, which make it difficult to test high-voltage power supplies. This Design Idea offers an alternative: an inexpensive electronic load rated for 500 V or ...
    Oct 24, 2016
67. Thermal design: Get the heat out of the electronics
    Paul Rako
    Articles Linear Technology LT3080
    If you have high-powered LEDS, or a power supply, or are trying to control larger motors, you have to get a lot of heat out of your circuit boards. The classic way to dissipate heat is to bolt your power transistor to an aluminum heat sink. That is ...
    Mar 11, 2017
68. Current Limiter Offers Circuit Protection with Low Voltage Drop
    Sajjad Haidar
    Circuits Linear Technology LT1636
    Most common current-limiting implementations have a voltage drop that’s too high for today's systems with their low-voltage supply rails; this design with its far lower voltage drop is a better fit. There are many cases where a power ...
    Nov 18, 2016
69. Convert 1 to 5V signal to 4- to 20-mA output
    Thomas Mosteller
    Circuits Linear Technology LT5400
    Despite the long-predicted demise of the 4- to 20-mA current loop, this analog interface is still the most common method of connecting current-loop sources to a sensing circuit. This interface requires the conversion of a voltage signal typically, ...
    Dec 1, 2016
70. Using a Current Sharing Controller with Non-Redundant Supplies
    Circuits Linear Technology LT1716 LT6650 LTC4370
    Bob Smith, Linear Technology Design Note 1036 Introduction The LTC®4370 is a 2-supply current sharing, diode- ORing controller that uses MOSFETs to form ideal diodes. In this way, the LTC4370 can actively balance the output currents of two ...
    Dec 2, 2016

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