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ARTICLES

Linear Technology's Synchronous step-down regulator delivers 2A & requires only 3.5µA of quiescent current

April 17, 2014

The LTC3624 is a high efficiency, 17V input capable synchronous buck regulator from Linear Technology that delivers up to 2A of continuous output current to outputs as low as 0.6V. Synchronous rectification delivers efficiencies as high as 95% while Burst Mode® operation requires only 3.5µA of no load quiescent current.


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Linear's gain block delivers 46 dBm OIP3 and 2.6 dB NF

April 14, 2014

Linear Technology announces the LTC6431-20, a 20 MHz to 2 GHz single-ended input and output fixed gain amplifier offering outstanding 46.2 dBm OIP3 (Output Third Order Intercept) and 2.6 dB noise figure. Its OP1dB (Output 1dB Compression Point) is a best-in-class 22 dBm.


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Linear's synchronous forward MOSFET driver eliminates signal transformer

April 2, 2014

Linear Technology Corp. announces the LT8311, a high efficiency secondary-side MOSFET driver that operates without the need for primary control in an isolated synchronous forward converter. The LT8311’s unique preactive mode eliminates the need for a signal transformer for primary to secondary-side communication by sensing signals on the secondary side to control synchronous rectification. This mode reduces component count and solution size.


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Step-Down Switching Regulator: LT3667

April 1, 2014

lt3667Linear Technology Corp. announces the LT3667, a 400 mA, 40 V step-down switching regulator with dual LDO outputs packaged in a 3 mm x 5 mm QFN or MSOP-16E. The LT3667 offers a highly compact, triple output solution for automotive and industrial applications. The LT3667 operates from a VIN range of 4.3 to 40 V with transient protection to 60 V.


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Linear's micropower 30 µV op amp settles in 15 µS to 0.0015%

March 31, 2014

Linear Technology introduces the LT6020, a dual 3V to 30V fast settling operational amplifier, featuring 30µV maximum input offset voltage and 0.5µV/°C max VOS drift. While supply current is only 100µA maximum per amplifier, proprietary slew enhancement circuitry provides fast clean output step response. The LT6020 settles to 0.0015% in less than 15µs regardless of whether the output step is 5V or 25V. Specially designed input circuitry maintains high impedance, minimizing current spikes associated with fast steps for input steps up to 5V.


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Buck Converter: LTC3637

March 24, 2014

3637Linear Technology announces the LTC3637, a 76 V input-capable high efficiency buck converter that delivers up to 1 A of continuous output current. It operates from an input voltage range of 4 to 76 V, making it ideal for telecom, industrial, avionic and automotive applications. The LTC3637 utilizes a programmable peak current-mode design to optimize efficiency over a broad range of output currents.


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Step-Down Slave Controller: LTC3870

March 13, 2014

LTC3870Linear Technology Corp. introduces the LTC3870, a dual phase synchronous step-down slave controller that can generate currents up to 240 A when paired with a companion master controller by extending the phase count in multiphase applications. Compatible master controllers include the LTC3880 and LTC3883 digital power system management controllers.


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Linear's 9 to 72 V ideal diode bridge controller now specified for military & automotive applications

March 5, 2014

Linear Technology Corp. announces the automotive (H-grade) and high reliability military (MP-grade) versions of the LT4320, an ideal diode bridge controller for 9 to 72 V systems. The LT4320 replaces a full-wave diode bridge rectifier with a low loss N-channel MOSFET bridge to reduce the power and voltage losses by a factor of ten or more. Power supply size is reduced as the enhanced power efficiency eliminates bulky heat sinks.


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Step-Up DC/DC Converter: LT3048

March 4, 2014

LT3048Linear Technology Corporation announces the LT3048, a step-up DC/DC converter with an integrated LDO output that delivers a low noise, low ripple 15 V bias supply. The LT3048-15 delivers up to 40 mA of continuous output current at 15 V with output ripple and noise less than 500 µVPK-PK and 0.1 % load regulation. The device operates from an input voltage range of 2.7 to 4.8 V, making it suitable for single-cell Li-Ion batteries or 3.3 V logic rails.


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Linear introduces flyback synchronous rectifier driver that provides 10 A output current

March 3, 2014

Linear Technology Corp. announces the LT8309, a flyback secondary-side synchronous rectifier driver that replaces the output diode with a MOSFET, allowing up to 10A output current without the use of a heat sink. The maximum output current of a flyback power supply has been limited by the power loss and heat generated from the output diode when no heat sink is used.


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