40V Synchronous Rectifier Enables High Efficiency In Switching Designs

March 24, 2008 10:24 am | Fairchild Semiconductor | Product Releases | Comments

Fairchild Semiconductor's 40V breakdown DC/DC synchronous rectifier for power supplies such as DC-DC brick modules and servers features desirable RDS(ON) and total gate charge (QG), and provides 20 percent lower Figure of Merit (FOM) compared to other 40V MOSFET solutions, according to the company. It comes in an industry standard and green


Analog Front End Enhances Ultrasound System Performance

March 24, 2008 9:47 am | Product Releases | Comments

Presenting a complete analog signal chain solution designed for portable ultrasound systems, Texas Instruments' AFE5805 integrated analog front end (AFE) delivers as much as a 50 percent space savings with up to 20 percent lower power consumption and 40 percent less noise than existing integrated solutions. Presented as the smallest device of its type and the first in the AFE58xx family of devices, the AFE reduces component count to decrease power consumption by up to 20 percent and offers 40 percent less noise than similar devices


Battery Authentication ICs Provide Device Security

March 21, 2008 5:53 am | Product Releases | Comments

Intersil introduced flexible battery authentication ICs for cell phones. The ISL9206 and ISL9206A are incorporate the company's FlexiHash+ engine. It provides high levels of security using a basic challenge/response scheme based on 32-bit challenge code and 8-bit response code. The engine employs


Op Amp Combines High Voltage and High Accuracy

March 19, 2008 12:31 pm | Product Releases | Comments

Texas Instruments introduced a precision power operational amplifier (op amp) which operates on supplies up to 100V and provides a high output current of ±50mA with a 150 mA short circuit limit. The OPA454 is unity-gain stable and can track fast moving signals since it has a slew rate of 10V/µs and gain-bandwidth product of 2.5 MHz. It features a single or dual supply of ±4V (8V) to±50V (100V).


Linear Regulator Cuts MSP430 System Standby Power In Half

March 19, 2008 11:17 am | Product Releases | Comments

Consuming what is presented as the lowest quiescent current in the industry at 500nA, the Texas Instruments' TPS780xx LDO also has a voltage select pin for designers to dynamically shift to a lower voltage level in a MSP430 microcontroller-based battery-powered design when the microprocessor is in sleep mode to cut power by as much as half. Stable with any output capacitor greater than 0.1µF


Miniature Signal Conditioning IC Enhances Optical Sensors' Proximity and Object Detection

March 19, 2008 7:55 am | Product Releases | Comments

Avago Technologies today announced a miniature single-chip signal conditioning IC that is said to enhance the performance and robustness of optical sensors used for proximity or object detection in consumer and industrial applications. When used with optical proximity sensors, the APDS-9700 signal conditioning IC provides


IGBTs Exhibit High Power Dissipation in Solar Inverter Apps

March 18, 2008 11:09 am | International Rectifier | Product Releases | Comments

Using the latest-generation field-stop trench technology to reduce conduction and switching losses, the IRGB40xxDPbF family of 600V IGBTs from International Rectifier reduces power dissipation by up to 30percent in UPS and solar inverter applications of up to 3 kW. The devices are optimized for switching at 20 kHz with a collector-to-emitter saturation voltage from 1.95V to 2.20V and currents from 4A to 48A with a internal soft-recovery diodes


Precision Amplifier Offers 20 fA Guaranteed Input Bias Current

March 18, 2008 10:58 am | Product Releases | Comments

National Semiconductor introduced the LMP7721 precision amplifier 20 fA guaranteed input bias current at room temperature and over the extended temperature range of -40°C to 125°C. According to the company, the device yields maximum system sensitivity and accuracy from photodiode and high-impedance sensors and is suited for improving sensitivity and accuracy in battery operated portable applications


Charge Pump Drives up to Six LEDs

March 16, 2008 1:49 pm | Product Releases | Comments

Catalyst Semiconductor, Inc. introduced the CAT3637 fractional charge pump LED drivers which address the requirements for high-efficiency and easy LED programming in portable devices. It is optimized for applications with one bank of five or six identical LED channels, a typical configuration for larger LED screen portable products. It incorporates a simplified version of the company’s 1-wire EZDim interface, which supports 16 output power levels, from from zero to 30 mA full brightness


Intermediate-bus Power Controllers are Highly Integrated

March 14, 2008 12:40 pm | Product Releases | Comments

Presented as the first such single-chip devices on the market to integrate high-voltage (75-V) half-bridge MOSFET drivers with a 1.6-A peak current driving capability, the Vishay Siliconix SiP11205 and SiP11206 controllers are designed to work on the primary side of an isolated half-bridge intermediate-bus converter in telecom and network equipment and in 1/16-brick or 1/8-brick power modules. Providing current monitoring and control features, the self-driven synchronous-rectification controllers step down voltages with greater than 95 % efficiency with an input voltage range from 36V to 75V


Reference Designs Create Low-Power Wireless Modules

March 14, 2008 6:17 am | Product Releases | Comments

Providing engineers the ability to create Ultra-Low Power (ULP) ISM-band button-cell powered wireless links, a family of reference designs using Nordic Semiconductor RF tranceiver chips require only a digital In/Out, power (+V) and ground (GND) connection for implementation. The seven module designs are based on the 2.4GHz nRF24L01 (RF Digital Modules RFD21010, RFD21676, RFD21677), nRF2401 (RFD21006), and nRF24E1 (RFD21018) and the 433/868/915MHz nRF905 (RFD21002), and nRF9E5 (RFD21014).


PWM Buck Regulators Feature Unique Auto-Tracking and Sequencing Capabilities

March 10, 2008 7:42 am | On Semiconductor | Product Releases | Comments

ON Semiconductor introduced the NCP312x family of dual output pulse width modulation (PWM) buck regulators that offer auto-tracking and sequencing capabilities. Featuring integrated MOSFETs that provide 2A (NCP3120, NCP3122) or 3A (NCP3121, NCP3123) output current with switching frequency up to 2.2 MHz, the devices are appropriate for a


Optocouplers Handle From -55°C to +100°C

March 7, 2008 10:23 am | Product Releases | Comments

Offering flexibility and board-space savings in low-current DC control circuits and AC power loads up to 380V, the EL30XX family of 6-pin DIP random-phase and zero-cross triac driver optocouplers provide an operating temperature range from -55°C to +100°C. Available in 21 varieties with peak blocking voltages from 250V to 800V and low-trigger currents of 5 mA, 10 mA, and 15 mA, the zero-cross versions of the triac driver optocouplers provide


SiC MESFETs Rival Silicon, GaAs Devices

March 6, 2008 4:40 am | Product Releases | Comments

Optimized for applications such as wideband MIL/Aero and defense communications, Class A and A/B amplifiers, and wireless broadband applications, Cree’s 48V silicon carbide (SiC) RF MESFETs have desirable properties compared to silicon or gallium arsenide, including higher breakdown voltage, higher saturated electron drift velocity, and higher thermal conductivity. The 10W CRF24010 has a 15dB gain and junction-to-case thermal resistance of


Single-Chip Front End Advances Low-Power Residential Gateways

March 5, 2008 6:39 am | Product Releases | Comments

Enabling the creation of improved low-power multi-mode VDSL2/ADSL2+ triple play residential gateways, the Ikanos Communications FXS60IF1single-chip Integrated Front End (IFE) integrates the xDSL line driver to reduce external components and power consumption compared to existing solutions. The device provides VDSL2 performance while meeting the DSL Forum’s stringent ADSL2+ and ADSL performance specifications (TR-100 and TR-067 respectively).



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