Switching Regulator Draws Low Quiescent Current

October 2, 2008 11:35 am | Product Releases | Comments

Protecting against overvoltage lockout transients up to 62 V, Linear Technology’s LT3972 3.5 A step-down switching regulator keeps quiescent current under 75 µA. The 3 mm² DFN-10- or MSOP-10E-packaged DC/DC converter provides an input voltage range from 3.6 V to 33 V and an output voltage range from 0.79 V to 30 V. The regulator utilizes a 4.6 A 95 mO switch with the necessary boost diode, oscillator, and control and logic circuitry while having a user-programmable switching frequency from 200 kHz to 2.4 MHz. The component offers


Transceivers Cover RS-232 and RS-485/422 Protocols

October 1, 2008 11:06 am | Product Releases | Comments

Functioning as 1- or 2-channel components, Intersil’s ISL333X family of dual protocol transceivers show switching between RS-232 and RS-485/RS-422 protocols. The 6 mm² devices exhibit 15 kV (HBM) ESD protection, data rates of 20 MBps, and flow-through pinouts while operating on 3.3 V supplies. An on-board charge pump generates compliant


Transceiver Enables ZigBee in Personal Computers

October 1, 2008 7:20 am | Product Releases | Comments

Coming in a USB stick form factor, Telegesis’ ETRX2USB 2.4 GHz ISM band transceiver enables ZigBee into personal computers via the Telegesis AT Style Command line interface. The Ember EM250 SoC-based module comprises of a LED, plug on the side for


Floating-Point Processors Enable Connectivity

September 30, 2008 7:12 am | Product Releases | Comments

Running in audio, medical, and industrial end products, Texas Instruments’ TMS320C6745/C6747 DSPs, and OMAP-L137 floating-point-DSP-plus-ARM applications processor include USB 2.0/1.1, 10/100 Ethernet, and multimedia/secure digital peripherals. The C6745 works at up to 300 MHz with a set of serial ports and multichannel audio serial ports with up to 16 serializers and FIFO buffers; an asynchronous and SDRAM external 8-bit


Power Switches Protect USB Ports

September 29, 2008 8:01 am | Product Releases | Comments

Coming in SOT25, SOP-8L, and MSOP-8L-EP packages, Diodes Incorporated’s AP21XX Series USB high-side power switches exhibit over-current and over-temperature protection. The components offer current limiting options of 0.75 A, 1.50 A, and 2.1 A, a choice of active-high and active-low enable, and replacement for existing industry-standard


DC/DC Regulators Utilize ICs and MOSFETs

September 26, 2008 1:04 pm | International Rectifier | Product Releases | Comments

Coming in a 5 mm × 6 mm × 0.9 mm Power QFN package, International Rectifier’s SupIRBuck family point-of-load (POL) DC/DC voltage regulators integrates synchronous buck control ICs and benchmark HEXFET trench technology MOSFETs. The components exhibit 4 A, 7 A, or 12 A of output current load, input voltage range from 2.5 V to 21 V, and an output range from 0.6 V to 12 V. The regulators present a fixed switching frequency of


Transceiver Adds Wireless Networking Capability

September 26, 2008 11:02 am | Product Releases | Comments

Utilizing EmberZNEt2.2 meshing technology, Telegesis’ ETRX2 ZigBee Pro ISM band transceiver enables the engineer to add wireless networking capability to products. The 2.4 GHz module offers an AT-style command line interface to allow integration of


Power Monitoring IC Exhibits 2.5 Percent Static Accuracy

September 26, 2008 5:27 am | International Rectifier | Product Releases | Comments

Using TruePower technology, International Rectifier’s IR3721 output power monitoring IC captures dynamic power information with 2.5% static accuracy at 65°C. The 10-pin lead-free DFN-packaged component works for DC/DC converters used in notebook computers, desktop computers, and energy-efficient server applications. The RoHS-compliant IC monitors


Recovery Rectifier Yields High Switching Speed

September 23, 2008 10:58 am | Product Releases | Comments

Coming in the GPR-4AM voidless glass-bead axial-leaded case, Central Semiconductor’s CPR5U-040 5 A 400 V recovery rectifier exhibits a switching speed of 25 ns. The 660°C metallurgical-bonded component operates in commercial, industrial, entertainment, avionics, and automotive applications, switch mode power supplies and half and full wave


ICs Manage Power Digitally

September 23, 2008 7:48 am | Fairchild Semiconductor | Product Releases | Comments

Complying with Energy Star specifications, Fairchild Semiconductor’s FD2004, FD2004-01 and FD2006 digital power controllers and FD1505 digital power support driver use Fairchild-Zilker’s Digital-DC architecture to manage power digitally. The 5 mm² 32-lead or 6 mm² 36-lead QFN-packaged controllers offer an input voltage range from


Battery Monitoring IC Measures 12 Cells

September 23, 2008 6:45 am | Product Releases | Comments

Stacking in series without optocouplers or isolators, Linear Technology’s LTC6802 multicell battery monitoring IC has the capability to measure up to 12 individual Lithium-Ion battery cells within 13 ms. The 8 mm × 12 mm 44-lead SSOP-packaged device performs in stack voltages over 1,000 V with <0.25% max. measurement error from -40°C to 85°C and


Semiconductors Provide Real-time Power Information

September 19, 2008 7:42 am | Product Releases | Comments

Using integrated 10-bit A/D conversion, Summit Microelectronics’ SMM151/2/3 environmental monitoring semiconductors allow systems to obtain real-time input current and differential output voltage information, and adjust operating modes. The SMM151 and SMM152 offer output voltage margining from 0.3 V to VDD (up to 5 V), 1% accuracy and margining during development or production. The SMM152 and SMM153 integrate 4 general purpose


Voltage Translator Yields Wide Voltage Range

September 18, 2008 7:16 am | Fairchild Semiconductor | Product Releases | Comments

Performing in Bluetooth and display screens, Fairchild Semiconductor’s FXM2IC102 I²C voltage translator operates over a voltage range from 1.65 V to


Audio Subsystem Delivers 725 mW

September 15, 2008 11:11 am | Product Releases | Comments

Powering from a lithium-ion battery, Maxim Integrated Products’ MAX9877 audio subsystem delivers 725 mW of output power from a 3.7 V supply into an 8 O load with a maximum efficiency of 85%. The device combines a mono Class D speaker amplifier, DirectDrive architecture, stereo headphone amplifier and bypass analog switch for Class AB


DC/DC Controller Drives N-channel Power MOSFET Stages

September 12, 2008 10:32 am | Product Releases | Comments

Offering coincident or ratiometric tracking, Linear Technology’s LTC3851 synchronous step-down DC/DC switching regulator controller include on-board MOSFET gate drivers to drive all N-channel power MOSFET stages. The 3 mm² QFN-16- or SSOP-16-packaged component exhibits an input voltage range from 4 V to 38 V, output voltage



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