Allegro MicroSystems, Inc.
Marlborough, MA 01752
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Gate Driver features integrated microstepping translator.
Suitable for driving medium to high-power bipolar 2-phase stepper motors, dual full-bridge Model A3986 provides all necessary circuitry to ensure that gate-source voltage of high-side and low-side external MOSFETs is above 10 V, and gate capacitance is quickly charged and discharged. Two sinusoidal DACs generate reference voltage for 2 separate fixed-off-time PWM current controllers. Full step to...
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SMPS Primary Regulators feature low EMI noise.
With low EMI noise characteristics at more than 2 MHz, STR-W67xx series of low-power off-line SMPS primary regulators includes quasi-resonant topology ICs, and enables output powers up to 160 W at 120 Vac, or 240 W at 230 Vac input. Soft switching mechanism turns on internal MOSFET at close point to VDS bottom point, while bottom-skip function skips first bottom of VDS and turns on MOSFET at...
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Hall-Effect Sensors operate down to 2.5 V.
Suited for battery-operated applications, analog-output Models A1391/2 and A1393/5 include sleep enable pin and have high impedance outputs while in sleep mode. By employing logic level on sleep enable pin, users can configure power consumption for device by modulating when device is active and sleeping. Housed in 2.00 x 3.00 x 0.75 mm packages, Models A1391/2 feature gains of 1.25 and 2.50 mV/G,...
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Driver IC targets office and factory automation markets.
Series SLA7070MPR unipolar 2-phase stepping motor driver IC features built-in motor coil, short- and open-circuit protection, and varied lout lineout from 1-3 A. Common interface signal and series pin compatibility simplify peripheral circuitry design, while built-in sense resistor helps reduce design space. Clock-in topology incorporates logic circuit that controls excitation switching and D/A...
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LED Driver suits portable electronics display applications.
Charge Pump White LED Driver, Model A8435, outputs well-matched LED currents for up to 4 channels. It accepts input range of 2.7-5.5 V and delivers up to 30 mA for each of 4 regulated current sources. Housed in 3 x 3 mm, MLP-16 package, device can deliver total output current of 120 mA, meeting requirements of most Li-ion battery-powered applications. Outputs can also be combined for WLED...
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DMOS Full-Bridge Motor Driver has over-current protection.
Designed for PWM control of dc motors, A3950 is capable of peak output currents to Ã-
Read More »LED Driver includes open LED detection.
Designed for LED display applications, 8-channel Model A6278 features 8 NPN constant-current sink drivers, as well as 8-bit CMOS shift register and latches that allow direct interfacing with microprocessor-based systems. With 3.3 or 5 V logic supply, serial data input rates are 25 MHz. CMOS serial output permits cascade connections in applications requiring additional drivelines. Three package...
Read More »LED Driver features staggered output delay.
Suited for LED display applications, Model A6279 includes 16-bit CMOS shift register, data latches, and 16 channels constant-current sink drivers. Opened LED connections can be detected and fed back to host microprocessor through serial data out pin. With 3.3 or 5 V logic supply, serial data-input rates are 25 MHz. CMOS serial data output permits cascade connections. Package styles include...
Read More »Linear Current Sensors offer 20 A dynamic range.
Featuring isolation voltage to 1,600 Vrms, bi-directional Series ACS706 consists of low-offset linear Hall sensor circuit with copper conduction path located near surface of die. Output has positive slope when increasing current flows through primary conduction path. Units measure ac or dc currents and are suited for motor control, load detection, switched-mode power supplies, and overcurrent...
Read More »Digital Speed Sensor features running mode calibration.
Supplied in an SH package, ATS642LSH addresses critical requirements specific to ABS speed-sensing applications. This 2-wire, dual-element, Hall-effect sensor switches in response to differential magnetic signals from ferrous target and can handle airgap variations due to cornering events. Running mode calibration automatically adjusts for miscalibration without missing transition and maintains...
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