Linear Technology Corporation annonce une nouvelle version de grande fiabilité, classe MP, du LT1431, un régulateur shunt de tension, à trois sorties réglables, qui fonctionne avec une température de jonction de – 55°C à 150°C. Ce composant peut recevoir un courant de 100mA, présente une référence de tension d’une précision initiale de 0,4% et une dérive de tension maximale de ± 1,4% sur la gamme de températures. Un diviseur de...

 Linear Technology annonce le LTC3536, un convertisseur abaisseur-élévateur, synchrone, qui peut fournir un courant de sortie jusqu'à 1A, à partir d’une source à Li-ion/polymère ou 300mA à partir de deux éléments de batteries alcaline /NiCd /NiMH. Ses gammes de tensions d’entrée et de sortie, de 1,8V à 5,5V, présentent une précision de la tension de sortie de ± 1%, pour des tensions d’entrée supérieures, inférieure...

- Linear technology Corporation présente le LTC3618,, un double régulateur à découpage, abaisseur, synchrone, monolithique, de haut rendement, pouvant générer la tension d’alimentation et la tension de terminaison de bus pour les applications à mémoires DDR/DDR2/DDR3 et au futur standard, qui requièrent les deux, un courant sortant et un courant entrant. La sortie du premier régulateur abaisseur procure une alimentation VDDQ, de grand...

- Linear Technology Corporation annonce les LTC3765 et LTC3766, un ensemble de deux puces comprenant deux convertisseurs directs, synchrones, avec extinction active (active clamp) et contrôle Direct Flux LimitTM qui empêche la saturation du transformateur de puissance dans n’importe quelle condition. Le LTC3765 est un contrôleur intelligent, côté primaire, qui fonctionne de conserve avec le LTC3766 pour la réalisation d’une alimentation...

Linear Technology announced the LTC3765 and LTC3766 synchronous forward converter chipset with active clamp reset and Direct Flux Limitâ„¢ that prevents power transformer saturation under all conditions. The LTC3765 is a primary-side intelligent controller that works in concert with the LTC3766 to implement a robust and simple self-starting isolated power supply. After start-up, the LTC3765 receives timing signals and bias power from the seconda...

Linear Technology introduces the LTC3618, a high-efficiency dual monolithic synchronous step-down switching regulator, capable of generating the supply voltage and the bus termination voltage for DDR/DDR2/DDR3 and future standard memory applications requiring both sourcing and sinking of current. The output of the first step-down regulator offers a high accuracy VDDQ supply capable of ±3A output. An internal resistor divider sets the VTT DDR ter...

Linear Technology announced the LT8500, a pulse width modulation (PWM) generator with 48 independent channels. Each channel has an individually adjustable 12-bit (4,096 steps) PWM register and a 6-bit (64 step) ±50% correction register. All controls are programmable via a simple TTL/CMOS 50MHz serial data interface.

Linear Technology announced the LTC3536, a synchronous buck-boost converter that delivers up to 1A of output current from a Li-Ion/Polymer source or 300mA from dual cell alkaline/NiCd/NiMH sources. Its 1.8V to 5.5V input and output voltage range achieves a +/-1% accurate output with inputs above, below or equal to the regulated output. The latest generation single inductor buck-boost pulse width modulation (PWM) topology incorporated in the LTC35...

Linear Technology announced a new high reliability MP-grade version of the LT1431, a three-terminal adjustable shunt voltage regulator that operates over a -55°C to 150°C junction temperature range. This device has a 100mA sink capability, 0.4% initial reference voltage accuracy and a ±1.4% maximum voltage drift over temperature. On-chip divider resistors allow the LT1431 to be configured as a 5V shunt regulator. By adding two exte...

Linear Technology announced the LT8500, a pulse width modulation (PWM) generator with 48 independent channels. Each channel has an individually adjustable 12-bit (4,096 steps) PWM register and a 6-bit (64 step) ±50% correction register. All controls are programmable via a simple TTL/CMOS 50MHz serial data interface. The LT8500 can be used in a wide variety of PWM-intensive applications such as LED control, as well as industrial and robotic appli...

Linear Technology has announced the H-grade version of the LTC4444/-5, a high-speed, high input supply voltage (100V), synchronous MOSFET gate driver designed to drive upper and lower power N-channel MOSFETs in synchronous rectified converter topologies. This driver, combined with power MOSFETs and one of Linear Technology’s many DC/DC controllers, forms a complete high efficiency synchronous regulator. The LTC4444H/-5 operates over a junct...

Linear Technology Corporation annonce les versions de classes H et MP du LTC3851A, un contrôleur DC/DC, abaisseur, synchrone, à large gamme de tensions d’entrée (4V à 38V), convenant à une large gamme d’applications, comprenant la plupart des tensions intermédiaires de bus et de batteries chimiques. Les robustes pilotes de grille de MOSFET, embarqués, permettent l'emploi de MOSFET externes, de forte puissance, pour fournir des intensi...

Linear Technology Corporation announces the H- and MP- grade versions of the LTC3851A, a wide input voltage range (4V to 38V) synchronous step-down DC/DC controller that encompasses a broad range of applications, including most intermediate bus voltages and battery chemistries. The strong onboard MOSFET gate drivers enable the use of high power external MOSFETs to produce output currents up to 25A with output voltages ranging from 0.8V to 5.5V, i...

Linear Technology just announced new Export Classification Control Numbers (ECCN) for its families of high performance, high speed ADCs with sample rates of up to 200Msps at 12-bit, 125Msps at 14-bits and 10Msps at 16-bit resolutions. New U.S. Export Administration Regulations have allowed these devices to be reclassified from ECCN# 3A001 to the less stringent ECCN# 3A991. This new classification provides engineers with the capability to use Line...

Minimizing size and cost is crucial in wireless applications such as cellular telephones. The key components in a typical GSM cellular telephone RF transmit channel consist of an RF power amplifier, power controller, directional coupler and diplexer. Some of the more recent RF power amplifiers incorporate a directional coupler in their module, reducing component count and board area.

Linear Technology introduced the LTC2997, a high accuracy temperature-to-voltage converter with built-in series resistance cancellation for 2.5V to 5.5V systems. Many low voltage systems today rely on temperature to assess overall system health and reliability. Traditional implementations require a series of filters, a precise reference and a current source, resulting in a complex conversion scheme prone to inaccuracies if not carefully designed...

Linear Technology has announced the LTC6803, a second generation high voltage battery monitor for hybrid/electric vehicle (HEVs), electric vehicles (EVs) and other high voltage, high performance battery systems. The LTC6803 is a complete battery measuring IC that includes a 12-bit ADC, a precision voltage reference, a high voltage input multiplexer and a serial interface. Each LTC6803 can measure up to 12 individual battery cells in series. The d...

Linear Technology annonce les versions LTC6803-1 et LTC6803-2 des gestionnaires de la seconde génération pour batterie d’accumulateurs, haute tension, destinés aux véhicules hybrides/électriques (HEV), véhicules électriques (EV) et autres systèmes sur batterie de forte tension aux performances élevées. Le LTC6803 est un circuit intégré complet permettant la mesure des paramètres de la batterie, il comprend un CAN 12 bits, une réfÃ...

Linear Technology annonce le LT6109, un composant complet pour la détection d'intensité, côté chaud, qui comprend un amplificateur de détection de courant, deux comparateurs et une référence de tension de précision, de 400 mV. Lorsqu’il est connecté à une résistance parallèle de détection de courant, l’amplificateur de détection de courant, côté chaud, détecte avec précision la tension aux bornes de cette résistance parallÃ...

Linear Technology just announced the LT6109, a complete high side current sense device that incorporates a current sense amplifier, dual comparators and a precision 400mV voltage reference. When connected to a current shunt resistor, the high side current sense amplifier precisely extracts the shunt voltage, amplifies it, and translates it to ground.