Circuits

Power Management ICs help extend battery life.

Suited for portable applications, AAT2782/AAT2783 operate off 2.7-5.5 V input and provide 3 independently regulated dc outputs: 2 step-down converters and one low input voltage LDO. Converters on AAT2782 deliver 1,200 and 600 mA, while those on AAT2783 supply 1,000 and 400 mA. Low input voltage LDO, optimized for low-noise operation, operates off 1.7 V input and delivers up to 400 mA with -80 dB...

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RF Micro Devices® Commences Volume Shipments of POLARIS® to Multiple Leading Handset Manufacturers

POLARIS 2, POLARIS 3 And POLARIS 3 Silver To Support Multiple New Handsets In The Second Half Of 2008 GREENSBORO, N.C., July 10 -- RF Micro Devices, Inc. (Nasdaq: RFMD), a global leader in the design and manufacture of high-performance semiconductor components, today announced it is commencing volume shipments of its POLARIS® RF solutions in support of six new feature-rich multimedia handsets....

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Macroblock Announces New Generation LED Driver with Industry-Leading Uniformity Performance

Hsinchu, Taiwan--Macroblock, the leader of LED display driver manufacturer, today announces the new generation LED driver, MBI5025, to achieve the best LED uniformity in the world. With the ultra-concentrative distributions by the advanced PrecisionDrive(TM) technology, the maximum output current variations between channels (also called channel skew ) and between drivers (also called chip skew )...

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Clock-Distribution ICs support per-channel enable controls.

Designed for precision clock management in embedded and handheld applications, 2-channel STCD1020, 3-channel STCD1030, and 4-channel STCD1040 integrate AC coupling capacitor to minimize external components. Capable of single-ended sine-wave or square-wave transmission in 10-52 MHz range, ICs can drive loads up to 20 pF to simplify output circuitry. They feature 2.5-3.6 V standard supply voltage,...

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LED Driver features integrated MOSFET.

Based on 40 V Bipolar-CMOS-DMOS technology, Model PAM2842 supports boost, buck, buck-boost, and SEPIC topology. Unit drives up to 30 W in configurations of 10 x 3 W or 30 x 1 W LEDs using integrated MOSFET. Maintaining 95% efficiency, PAM2842 maintains operation in spite of input voltage degradation or high temperature environments. Operating from 5.5-40 V input voltage, device includes over...

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High-Current LED Driver employs MCU for intelligent operation.

Combining 8-bit All Flash(TM) MCU with 4-channel HCD, -µPD78F8024 HCD/LED MCU can be used in lighting applications that employ multiple LEDs as well as industrial control applications such as stepping motors, solenoid drives, and switch-mode power supplies. Supporting wide input voltage range of 9-38 V, flexible 4-channel architecture also enables designs using both buck and boost regulator...

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MOSFET Pre-Driver IC targets motor system designers.

Available in 48L eLQFP package, Model A4935KJP-T is suited for systems that use sinusoidal control of motor phase currents. Automotive grade 3-phase MOSFET pre-driver IC integrates regulating charge pump that provides full gate drive capability for battery voltages down to 7 V and reduced gate drive for battery voltages as low as 5.5 V. It features fault diagnostics and reporting to decode and...

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Battery Charger can handle input voltages up to 28 V.

Ensuring overvoltage protection, Model ISL9301 single-cell Li-ion/polymer battery charger features high input voltage and integrated overvoltage protection circuit which enables automatic shutdown feature when input voltages exceed 10.5 V during normal operation. With multiple power paths, one for charging and another for device operation, it enables simultaneous charging and powering of any...

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Power-Monitoring IC provides ±1% accuracy.

Suited for microprocessor and MCU power-monitoring applications, MAX6394 integrates highly precise bandgap reference which allows for trimming reset thresholds to as much as ±0.6% accuracy at room temperature. Unit has 9 fixed voltage thresholds, each with 0.7, 14, 105, and 826 msec preset timeout periods. Operating between -40 to +125°C automotive temperature range, it provides open-drain...

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VHF/UHF Transmitter handles power-sensitive applications.

Transmitting OOK/ASK/FSK data at 315 or 390 MHz, MAX7058 supports dual-frequency operation with single 15 MHz crystal, and can operate at any 2 frequencies in 300-450 MHz range with use of different crystal frequencies. It integrates wideband VCO and internal tuning capacitors that can be programmed to match the impedance of power amplifier to antenna. Device operates from single 2.1-3.6 V...

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