Linear Technology Corp.
Milpitas, CA 95035
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Step-Up DC/DC Converter includes true output disconnect.
Featuring inrush current limiting and integrated soft-start, 3 MHz Model LTC3422 delivers up to 700 mA continuous output current at 5 V from single cell Li-ion input. Internal switches provide 1.5 A current limit and deliver output voltages up to 5.25 V from input voltage of 0.5-4.5 V. Synchronous rectification enables efficiencies up to 96%, while Burst Mode(TM) operation lowers quiescent...
Read More »DC/DC Controller powers UltraSPARC-® and SPARC-® processors.
Offering 45 A single-chip solution, PolyPhaseÃ-® synchronous step-down controller, Model LTC3819, features 4 integrated MOSFET drivers and on-board 5-bit digital interface. Core voltage is from 1.025-1.4125 V in 12.5 mV steps and core current ranges from 15-40 A. Housed in 10-pin MSOP package, device operates at up to 90% efficiency from input voltage of 4.5-36 V, and includes current...
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Step-Down DC/DC Converter comes in 5 x 3 mm DFN package.
Using constant frequency and current mode architecture, LTC3417 operates from 2.25-5.5 V input range and delivers up to 1.4 A continuous output current from one channel and 800 mA from other. This dual-output, synchronous buck regulator can generate 2 independent output voltages as low as 0.6 V, and its adjustable switching frequency from 0.6-4 MHz allows enables use of ceramic capacitors and...
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Photoflash Capacitor Charger comes in 3 x 3 mm DFN package.
Featuring complete photoflash capacitor charger and IGBT driver, LT3485-3, -0, -2, and -1 photoflash capacitor charger ICs operate from 1.8-10 V range and have primary current limits of 2, 1.4, 1, and 0.7 A respectively. Control technique allows series to use 5.8 x 5.8 x 3 mm transformers, and no external components are required to set output voltage. While charging, output proportional to...
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Analog-to-Digital Converters suit software defined radios.
Featuring sampling rate of 105 MS/sec, 14-bit, dual ADC Model LTC2284 delivers flat SNR response of 72.2 dB up to 70 MHz as well as SFDR of 88 dB at baseband. Models LTC2280 and LTC2282 are 10-bit and 12-bit dual ADCs also with 105 MS/sec bandwidth sampling rate. Housed in 9 x 9 mm QFN package, all devices consume 270 mW per channel, with crosstalk between channels of -110 dB. They are optimized...
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Step Down Regulator features 4 MHz switching frequency.
Using constant frequency, current mode architecture, Model LTC3412A can deliver up to 3 A of continuous output current at voltages as low as 0.8 V from 4 x 4 mm QFN package. It operates from input voltage of 2.25-5.5 V, making it suited for single cell Li-Ion or NiMH applications. Synchronous buck regulator uses internal switches with RDS(ON) of 0.065 and 0.077 ohms to deliver efficiencies up to...
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Li-Ion Battery Charger is housed in 2 x 2 mm DFN package.
Standalone, linear Model LTC4065L charges single coin cell Li-Ion batteries up to 250 mA without overheating device or surrounding components. IC offers 4.2 V Ã-
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Analog-to-Digital Converter offers output rates to 8 kHz.
Able to achieve 1 ppm linearity with integrated amp configured as unity gain buffer, LTC2442 multiplexed, 24-bit ADC features Delta Sigma(TM) architecture that ensures stable dc accuracy through continuous transparent offset and full-scale calibration. Architecture rejects channel-to-channel crosstalk and is immune to lockup due to large input disturbances. With noise as low as 220 nVrms, 10 no...
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Power Supply Tracker enables control of dc/dc modules.
Designed for modules or power supplies with or without access to feedback pins, Model LTC2926 enables variety of power up and power down profiles and supports up to 2 slave supplies that track master signal. Tracking of up to 2 dc/dc modules is achieved with N-channel MOSFETs in series with power path, and 2 integrated remote sense switches automatically compensate for voltage drop across...
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Synchronous Controller includes output tracking function.
With input range of 2.75-9.8 V, 2-phase, dual step-down switching regulator, Model LTC3736-2 deliver outputs as low as 0.6 V. Constant frequency current mode architecture with MOSFET VDS sensing eliminates need for sense resistors. By operating 2 controllers out of phase, power loss and noise due to ESR of input capacitance are minimized. Switching frequency can be programmed up to 750 kHz and...
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