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ARTICLES

5W AutoResonant wireless power transmitter offers foreign object detection

Linear Technology Corp. introduces the LTC4125, a wireless power transmitter, complementing our wireless receiver ICs for the wireless charging market. The LTC4125 is a simple, high performance monolithic full bridge resonant driver, capable of delivering up to 5W of power wirelessly to a companion receiver. It functions as the transmit circuit component in a complete wireless power transfer system comprised of transmit circuitry, transmit coil, receive coil and receive circuitry.


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SAR Analog-to-Digital Converter: LTC2380-24

LTC2380-24Linear Technology Corp. introduces the LTC2380-24, a breakthrough no latency 24-bit 2 Msps successive approximation register (SAR) analog-to-digital converter (ADC). The LTC2380-24 features an integrated digital filter that averages 1 to 65,536 conversion results real time, dramatically improving the dynamic range from 101 dB at 1.5 Msps to 145 dB at an output data rate of 30.5 sps.


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Step-Up DC/DC Converter: LT8331

LT8331Linear Technology Corp. announces the LT8331, a current mode step-up DC/DC converter with an internal 500 mA, 140 V switch. It operates from an input voltage range of 4.5 to 100 V, making it suitable for use with a wide range of input sources found in industrial, transportation and avionic applications. The LT8331 can be configured as either a boost, SEPIC, flyback or inverting converter. Its switching frequency is programmable from 100 to 500.


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Linear Tech's energy monitoring Hot Swap Controller enables 100A Board Designs

Linear Technology Corp. introduces the LTC4282, an energy monitoring Hot Swap controller with dual MOSFET drive to enable 100A and higher current board designs. The LTC4282 ensures safe board insertion and removal from live 2.9V to 33V backplanes by controlling external N-channel MOSFETs to gently power up capacitors, avoiding sparks, connector damage and system glitches.


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Energy Monitoring Hot Swap Controller: LTC4282

LTC4282Linear Technology Corp. introduces the LTC4282, an energy monitoring hot swap controller with dual MOSFET drive to enable 100 A and higher current board designs. The LTC4282 ensures safe board insertion and removal from live 2.9 to 33 V backplanes by controlling external N-channel MOSFETs to gently power up capacitors, avoiding sparks, connector damage and system glitches. High current hot-pluggable boards utilize parallel MOSFETs to reduce voltage drop.


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Dual-Channel IC: LT3095

LT3095Linear Technology Corp. announces the LT3095, a dual-channel IC delivering two very low noise, low ripple bias supplies from a single input. Each channel incorporates a monolithic step-up DC/DC converter post-regulated by an integrated ultralow noise and high PSRR linear regulator. The LT3095 delivers up to 50 mA of continuous output current at output voltages up to 20 V with total ripple and noise < 100 µVP-P. The device operates from a 3 to 20 V input voltage range.


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Synchronous Step-Down Switching Regulator: LT8631

LT8631Linear Technology Corp. announces the LT8631, a 1 A, 100 V input capable synchronous step-down switching regulator. Synchronous rectification delivers efficiency as high as 90% while Burst Mode® operation keeps quiescent current under 7 µA in no-load standby conditions. Its 3 to 100 V input voltage range makes it ideal for 48 V automotive systems, dual battery transportation, industrial and 36 to 72 V telecom applications.


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High Voltage, Low Noise Dual Output Power Supply: LTC3265

LTC3265Linear Technology Corp. announces the LTC3265, a high voltage, highly integrated, low noise dual output power supply which takes a single positive input supply (VIN_P) and generates low noise bipolar rails up to ±2•VIN_P without any inductors. The device includes a boost doubling charge pump, an inverting charge pump and two low dropout (LDO) regulators. The boost charge pump has a wide 4.5 to 16 V input range.


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Synchronous Boost DC/DC Converter: LTC3121

LTC3121Linear Technology Corp. announces the LTC3121, a 3 MHz current mode, synchronous boost DC/DC converter with integrated output disconnect. Its internal 1.5 A switches deliver output voltages as high as 15 V from an input voltage range of 1.8 V at start-up (0.5 V when running) to 5.5 V, making it ideal for battery or standard 3.3 V and 5 V power sources. The LTC3121 delivers up to 40 0mA of continuous output current at 1 2 V from a 5 V input.


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Multiphase Synchronous Step-Down DC/DC Controller: LTC3877

LTC3877Linear Technology Corp. introduces the LTC3877, a dual output multiphase synchronous step-down DC/DC controller with 6-bit voltage identification (VID) control that enables 10 mV output voltage step resolution, a necessary feature when powering FPGAs and ASICs with tight input voltage requirements. The LTC3877 operates over an input voltage range of 4.5 to 38 V and produces a fixed output voltage from 0.6 to 1.23 V when using VID and up to 5 V without VID.


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