Linear Technology Corp.
Milpitas, CA 95035
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Supervisory Circuit monitors positive and negative voltages.
Suited for multivoltage, high-density systems, Model LTC2910 features 8 adjustable undervoltage monitoring inputs with 0.5 V threshold and 1.5% threshold accuracy over entire temperature range. Two external resistors per input determine desired trip point for undervoltage monitor, while 3-state select pin programs polarity combinations for input thresholds, allowing negative supplies to be...
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Step-Down DC/DC Converter delivers up to 300 mA/channel.
Using constant frequency current mode architecture, dual-channel Model LTC3547 operates from input voltage of 2.5-5.5 V with efficiencies as high as 96%, making it suited for Li-Ion/Polymer or multicell alkaline/NiCad/NiMH applications. Housed in 3 x 2 mm DFN package, synchronous buck regulator generates output voltages as low as 0.6 V. Switching frequency of 2.25 MHz enables use of tiny ceramic...
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DC/DC Controller does not require sense resistor.
Featuring 550 kHz operating frequency, current-mode, step-up Model LTC3872 offers compact solution for converting 2.5-9.8 V input voltage to output voltage up to 60 V. When sense resistor is used, output voltage is limited only by external components. Low operating current of 250 Ã-µA and shutdown current of 8 Ã-µA extend battery life. Housed in thermally enhanced, 2 x 3 mm DFN package,...
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Step-Down DC-DC Controller draws only 40 -µA.
With 4-60 V input range, current-mode Model LTC3824 can be programmed to fixed frequency from 100-600 kHz, or synchronized to external clock over same range for noise sensitive requirements. Output voltage is adjustable from 0.8 V to VIN. Housed in 10-pin, thermally enhanced MSOP package, controller offers 100% duty cycle and is suited for automotive applications where 4 V min input voltage...
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DC/DC Step-Down Controller draws 80 -µA in sleep mode.
Operating from 4-36 V input, LTC3835 features Ã-
Read More »Dual RF Power Detector addresses multi-band applications.
Covering RF applications ranging from 300 MHz to 11 GHz, dual channel LTC5533 RF power detector supports multiple frequencies in single package. It features 40 dB dynamic range and 45 dB channel-to-channel isolation. Drawing 500 Ã-µA per detector, device is suited for dual-band Wi-Fi PA power control, dual-band cellular/WiMAX basestations, point-to-point microwave links, transmit PA forward...
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Step-Down DC/DC Converter has 750 kHz operating frequency.
Packaged in 6-pin, 2 x 3 mm DFN, current mode PWM LT3493 operates from 3.6-36 V input range and features internal 1.4 A power switch. Its low VCESAT (330 mV @ 1 A) internal switch offers efficiencies up to 89%, and device can generate outputs as low as 0.78 V. Internal cycle-by-cycle current limit protects against shorted outputs, while soft-start eliminates input current surge during start up....
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RS485 Transceivers have switchable, integrated termination.
Manufactured in DFN packages, LTC2859 and LTC2861 are half- and full-duplex RS485 transceivers with software-switchable, integrated termination. Slew rate control pin allows data rates up to 20 Mbps or low-EMI mode at 250 kbps. Bus pin protection exceeds Ã-
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Power Management Device targets handheld applications.
Housed in 3 x 5 mm DFN package, LTC3552-1 includes standalone Li-Ion battery charger and dual synchronous buck regulator. Charger delivers up to 950 mA charge current from wall adapter or up to 500 mA charge current from USB supply. Buck regulators deliver up to 800 mA continuous output current at 1.8 V and up to 400 mA at 1.575 V. Operating from input range of 2.5-5.5 V, regulators suit...
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