Allegro MicroSystems, Inc.

Construction Equipment and Supplies

MOSFET Pre-Driver IC targets motor system designers.

Available in 48L eLQFP package, Model A4935KJP-T is suited for systems that use sinusoidal control of motor phase currents. Automotive grade 3-phase MOSFET pre-driver IC integrates regulating charge pump that provides full gate drive capability for battery voltages down to 7 V and reduced gate drive for battery voltages as low as 5.5 V. It features fault diagnostics and reporting to decode and...

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Construction Equipment and Supplies

MOSFET Control/Driver IC targets automotive market.

Designed to drive 4 N-channel MOSFETs in high-side configuration with gate drive outputs that utilize current-source topology, Model A3942 provides interface between system controller and various high current loads found in automotive engine control systems. IC operates over 4.5-60 V voltage range and full automotive temperature range, making it suitable for both 12 and 24 V engine control...

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Hall-Effect Latches suit non-automotive applications.
Electrical Equipment & Systems

Hall-Effect Latches suit non-automotive applications.

Offered in reverse battery protected packages, temperature-stable and stress-resistant latches have dynamic offset cancellation that reduces residual offset voltage. On single silicon chip, Models A3290 and A3291 include Hall-voltage transducer, small-signal amplifier, chopper stabilization, Schmitt trigger, and short-circuit protected open-collector output to sink up to 25 mA. Onboard regulator...

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MOSFET Pre-driver suits high temperature automotive systems.
Construction Equipment and Supplies

MOSFET Pre-driver suits high temperature automotive systems.

Model A3941 automotive grade MOSFET pre-driver IC is developed for industrial systems utilizing 24 V battery. Capable of driving 4 external N-Channel MOSFETs in full-bridge configuration, it is used in brush dc motor drive applications where high-currents in combination with high ambient temperatures require use of external MOSFETs. IC is rated over full automotive temperature range of -40 to...

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Electrical Equipment & Systems

Hall-Effect Switch comes in wafer level chip scale package.

Suited for battery-operated electronics, Model A1172 features latched digital outputs and omnipolar magnetic actuation, and has operating supply voltage of 1.65-3.5 V. Both north and south polarity magnetic fields of sufficient strength activate output switching, to either off or on. Unit provides 2 push-pull outputs that are configured such that one output switches off in absence of sufficient...

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Controls & Controllers

Brushless DC Motor Driver has integrated Hall element.

Combining H-bridge output driver and PWM speed control logic into monolithic IC, A1444/A1445 single-chip devices achieve full device functionality down to 1.8 V VDD. They employ soft-switching algorithm to reduce audible switching noise and EMI interference, and each model offers different, selectable internal PWM duty cycle options. Targeted at communication and consumer markets, motor drivers...

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Controls & Controllers

Switching Regulator comes in 4 x 4 mm, 20-pin QFN package.

Suited for portable, office automation, and consumer applications, Model A4490 provides 3 high-current, adjustable, and switching regulator outputs with 4.5-34 V input voltage range. Each output is adjustable from 0.8-5 V with maximum current of 2 A. Triple output step down switching regulator features 550 kHz fixed frequency switching, charge pump to provide supply to drive power switches,...

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Hall-Effect Current Sensor has high-speed/low-noise design.
Sensors, Monitors & Transducers

Hall-Effect Current Sensor has high-speed/low-noise design.

Featuring 125 KHz bandwidth capability, ACS756 open-loop Current Sensor takes advantage of low-loss leadframe of CA package and accelerated response capability of integrated core. Internal electrostatic shield shunts effects of voltage transient spikes around silicon and minimizes voltage ripple on output. While suited for various 50-100 A applications, specific areas of use include motor and...

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Sensors, Monitors & Transducers

Low-Noise Linear Hall-Effect Sensors are fully programmable.

Suited for high-frequency current sensing applications, models A1360/1/2 are specified over -40 to 150°C range and exhibit noise down to 8 mVpp, flat temperature coefficient of 0%/°C, and bandwidth capability up to 50 kHz typ. Each is supplied in 1 mm thin, 4-lead SIP (KT package), which minmizes gaps in concentrator and C-core systems. Respectively, models A1360, A1361, and A1362...

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