Circuits

DC/DC Controller offers differential output voltage sensing.

Operating with all N-channel MOSFETs from 4.5-38 V input voltages, Model LTC3855 produces output voltages from 0.6-12.5 V with ±0.75% accuracy. Dual output, synchronous step-down controller provides up to 95% efficiency. Up to 12 phases can be paralleled and clocked out of phase to minimize I/O filtering requirements for applications up to 200 A. Fixed operating frequency can be programmed from...

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Op Amps achieve 180 MHz at 1 mA.

Featuring rail-to-rail inputs and outputs, Models LTC6246, LTC6247, and LTC6248 are single, dual, and quad op amps, respectively, with 90 V/-µs slew rate and 4.2 nV/√Hz wideband noise. Input offset voltage is specified at 500 -µV max and open loop gain is 45 V/-µV. Employing bias current cancellation to achieve max of 350 nA input bias current over most of input common mode voltage range, op...

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National Semiconductor Introduces Industry's First 65 MHz, 24-Bit Color SerDes Family for Infotainment Displays

FPD-Link II Chipsets Deliver Scalable Solution for Full Range of Display Resolutions September 28, 2009 - National Semiconductor Corp. (NYSE: NSM) today introduced the industry's first serializer and deserializer (SerDes) chipsets capable of driving high-resolution, 24-bit color flat-panel displays with a 65 MHz clock. The two new additions to National's FPD-Link II SerDes chipset family deliver...

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Contactless-Memory IC suits reusable electronic tickets.

Model SRi2K features on-chip memory of 2 Kb and RFID circuitry that operates at standard 13.56 MHz carrier frequency. It has 64-bit ID and lockable memory blocks for security, while 8-bit anticollision mechanism allows large numbers of tickets to coexist without interfering. To prevent data loss due to power failure while ticket is being debited, IC features dual 32-bit decrementing counters....

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Passive Low Frequency Interface wirelessly powers MCU.

Model TMS37157 passive low frequency interface (PaLFI) can wirelessly supply MSP430 MCU, from up to 1 m, to remotely communicate with/power implantable medical devices, track containers, and configure electronic equipment. Unit provides battery check and charge function via RF field. Memory is accessible via SPI and wireless LF 134 kHz interface and no battery is required for data programming...

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Power Supervisor ICs have programmable delay, watchdog timer.

Supplied in 4 x 4 mm, 20-pin QFN package, TPS386000 series supply voltage supervisors (SVSs) can monitor 4 power rails greater than 0.4 V with threshold accuracy of 0.25%. Independent programmable delay input, which can be set from 1.25 ms to 10 seconds for each supervisor channel, enables power supply sequencing. Operating with quiescent current of 12 -µA, ICs offer options for open-drain,...

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Dual Low Voltage LDO delivers up to 200 mA from each output.

Dual Low Voltage LDO delivers up to 200 mA from each output.

Suited for portable battery powered applications, dual LDO regulator AS1374 offers 120 mV dropout at 200 mA load currents at each output. It is available with preprogrammed output voltages between 1.2-3.6 V (programmable in 50 mV steps). Output voltage noise is 20 -µV rms and power supply rejection ratio is 85 dB at 1 kHz. Device is available in 6-bump WLP package, and requires only 1 -µF...

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PSE Controller addresses IEEE 802.3at PoE+ standard.

PSE Controller addresses IEEE 802.3at PoE+ standard.

Providing up to 100 W over 4-pair Ethernet cabling, single-channel LTC4274 is used for power sourcing equipment (PSE) required to provide IEEE 802.3at or proprietary higher power levels. Use of low RDS(ON) MOSFETs and 0.25 Ohm sense resistors eliminate need for heat sinks, and IEEE 802.3at powered device (PD) discovery is accomplished using dual-mode, 4-point detection mechanism that ensures...

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Synchronous Buck Controllers operate from 3-28 V.

Synchronous Buck Controllers operate from 3-28 V.

Housed in 3 x 3 mm, halogen-free, RoHS-compliant packaging, Model SC419 is intended for operation in systems that have dual supplies, while Model SC418 integrates LDO regulator to enable operation from single supply up to 28 V. Units feature ultrasonic power save with programmable floor frequency, and SmartDrive(TM) technology, which minimizes EMI and eliminates need for snubbers or gate drive...

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High-Voltage Power IC efficiently drives dimmable CFLs.

Supplied in SO20L package, UBA2028 enables lighting manufacturers to create CFLs with dimming capabilities down to 10% of full light intensity. It can drive and control dimmable CFLs up to 21 W and enables extended CFL lifetimes beyond 15,000 hr. Along with 2 internal 600 V, 3 ohm (max) MOSFETs, IC includes half-bridge power circuit, dimming function, high voltage level shift circuit, oscillator...

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Krueger Sentry Gauge Announces the Release of Two New Chemical Sight Gauge Models Designed for Aggressive Liquid Storage Monitoring
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Krueger Sentry Gauge Announces the Release of Two New Chemical Sight Gauge Models Designed for Aggressive Liquid Storage Monitoring

Krueger Sentry Gauge, a leader in chemical sight gauges, now offers the ultimate in aggressive liquid storage monitoring devices. From sulfuric and hydrochloric acid to bleach, and acetone, our products are designed with robust features that deliver a long and trouble-free service life. See our video to learn all about this new and innovative line of sight gauges.

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