Articles Tagged with ''voltage''

Linear introduces a current-mode synchronous step-down DC/DC controller

Linear Technology Corp. introduces the LTC3875, a dual output current-mode synchronous step-down DC/DC controller that enables the use of very low DC resistance (DCR) power inductors by using a novel DCR sensing architecture that enhances the signal-to-noise ratio of the current sense signal. Power inductor DCR, as low as 0.2 milliohms can be used without a sense resistor to maximize converter efficiency and increase power density. This new DCR sensing technique dramatically reduces the switching jitter normally associated with low DCR sensing applications.


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Crystek introduces new 2380 MHz VCO

Crystek's CVCO55CC-2380-2380 VCO (voltage controlled oscillator) operates at 2380 MHz with a control voltage range of 0.3 ~ 4.7 V. This VCO features a typical phase noise of -119 dBc/Hz @ 10 KHz offset and has excellent linearity. Output power is typically +2.5 dBm.


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Linear introduces dual 3 A, 4 MHz, synchronous step-down regulators with DDR memory

LTC3615Linear Technology introduces new high reliability H grade and military MP grade versions of the LTC3615 and LTC3615-1, high efficiency, 4 MHz synchronous buck regulators that incorporate a constant frequency, current-mode architecture. Low resistance internal switches enable the LTC3615 to deliver up to 3 A of continuous output current from each channel.


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Crystek introduces new 902 to 928 MHz VCO

Crystek's CVCO25CL-0902-0928 voltage controlled oscillator (VCO) operates from 902 to 928 MHz with a control voltage range of 0.5 V~3.5 V. This VCO features a typical phase noise of -108 dBc/Hz @ 10 KHz offset and has excellent linearity. Output power is typically +3 dBm.


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VPG extends resistance range of ultra-high-precision flip chip COTS resistors down to 5 ohms

Vishay Precision Group Inc. announced that its Vishay Foil Resistors brand (VFR) has enhanced its VFCP series of Bulk Metal® Z-Foil ultra-high-precision flip chip resistors with an extended resistance range down to 5 Ω. The devices feature ultra-low TCR of ±0.05 ppm/°C nominal (0°C to +60°C) and ±0.2 ppm/°C typical (-55°C to +125°C, +25°C ref.) and load-life stability of ±0.005% at 70°C for 2,000 hours at rated power and ±0.01% at 70°C for 10,000 hours. 


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Linear introduces 55 V IN/55 V OUT buck-boost battery charging controller

Linear Technology Corp. introduces the LTC4020, an advanced high voltage power manager and multi-chemistry battery charger designed to efficiently transfer power from a variety of sources to a system power supply rail and a battery. The device offers precision charge current regulation, ±0.5% charge voltage regulation and operates across a wide 4.5 V to 55 V input voltage range compatible with a variety of different input voltage sources. 


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Linear introduces 42 V, 4 A (IOUT), synchronous step-down silent switcher

Linear Technology Corp. announces the LT8614, a 4 A, 42 V input capable synchronous step-down switching regulator. A unique Silent Switcher™ architecture reduces EMI/EMC emissions by more than 20 dB, well below the CISPR 25 Class 5 limit. Even with switching frequencies in excess of 2 MHz, synchronous rectification delivers efficiency as high as 96% while Burst Mode® operation keeps quiescent current under 2.5 µA in no-load standby conditions.


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