Allegro MicroSystems, Inc.
Marlborough, MA 01752
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Stepper Motor Driver IC suits automotive applications.
Model A3980 features fault diagnostics and reporting and has integrated DMOS outputs, which are protected against short-to-battery and short-to-ground. STEP and DIRECTION interface allows for up to 1/16th microstepping without complex system controller. Output drivers operate between 7-35 V and will typically run up to 1 A of output current. Offered over junction temperature range of -40 to...
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Analog Speed Sensor has integrated tracking capacitor.
With dual, zero-crossing output signal, A1425 consists of ac-coupled differential sensor with on-chip capacitor. True zero-crossing detector has output that switches when difference in magnetic field strength between 2 Hall elements is zero. Dual-comparator scheme provides for accurate switching at zero crossing on positive and negative going regions of differential signal, while utilizing...
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Direction Detection Sensor features diagnostic output.
Targeted at automotive market, Hall-Effect Sensor IC and magnet combination provides solution for digital gear-tooth sensing and true zero-speed direction detection in 2-wire applications. It consists of single-shot molded plastic package with samarium cobalt magnet, pole piece, and single-chip Hall-Effect IC. Integrating 3 Hall elements and signal processing circuitry, sensor switches in...
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Unipolar Switches are programmed in-field or at factory.
Dual-wire, Hall-effect unipolar switches A114x and A118x use chopper-stabilization technique on DABIC5 BiCMOS process to achieve magnetic stability over operating temperature range. Field-programmable A118x lets users externally trim operate points, while factory-programmed A114x provides preset magnetic operate points. Both series offer inherent diagnostic capabilities and internal Zener clamp...
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Current Sensors feature 50 kHz bandwidth.
Available in 50 and 100 A versions, Series ACS752 provides 3 kV isolation and single +5 V supply operation while placing only 130 Ã-µohm of resistance in current path. Bidirectional units consist of linear Hall IC optimized to internal magnetic circuit. Lead-free, PC-mountable package is only 14 x 22 x 7 mm overall. Applications include AC motor control, battery management, UPS and emergency...
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Dual Wire Sensor is suited for transmission speed sensing.
Supplied in SH package, ATS643LSH employs dual-element Hall-effect sensor and signal-processing circuitry that switches in response to differential magnetic signals. Unit integrates magnet and monolithic silicon IC as well as compensation circuit that eliminates magnet and system offsets immediately at startup. Digital tracking of analog signal is used to achieve true zero-speed operation and set...
Read More »Pre-Driver ICs drive external N-Channel MOSFETs.
Pre-Driver IC Family fills need for driving either DC brush or DC brushless motors in systems with motor supply voltages as low as 7 V and as high as 60 V. Wide operating temperature range, fault diagnostics and reporting, and operation over wide supply voltage make family suited for harsh automotive environment. Each is offered in various options of surface mount packages, including low profile...
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Motor Driver IC comes in thermally enhanced package.
Series A3949SLP and A3949SLB DMOS full-bridge motor driver IC suits DC motor applications. Unit operates with single supply and with output rating of 36 V at 2.8 A. Driver is offered in small outline, 16-lead thermally enhanced TSSOP package measuring 5.0 x 4.4 mm. PHASE and ENABLE input terminals control speed and direction. Low rDS(On) DMOS outputs are combined with internal synchronous...
Read More »Voltage Regulation ICs suit satellite receiver applications.
Intended for analog and digital satellite receivers, the Low-Noise Block Voltage Regulators (LNBRs) family consists of monolithic linear and switching voltage regulators, which provide power and interface signals to LNB downconverter via coaxial cable. Switching regulator tracks to just above linear regulator output, providing low power dissipation. Available in buck or boost versions, LNBRs...
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