Allegro MicroSystems Europe has introduced a family of complete microstepping motor driver ICs with built-in translators. The A5976, A5977 and A5979 have been designed to operate bipolar stepper motors in full-, half-, quarter-, eight, (A5977) and sixteenth- (A5976/79) step modes. All have the output drive capability of 40V and ±2.8A and include a fixed off-time current regulator that has the ability to operate in slow, fast or mixed-decay...

Allegro MicroSystems Europe announces its first ever 1MHz bandwidth Hall-effect current sensor IC with a lightning fast 210 ns response time. The ACS730 provides an economical and precise solution for AC or DC current sensing. Allegro’s ACS730 is targeted at industrial, commercial, and communications systems. Typical applications include motor control, load detection and management, switched-mode power supplies, and over-current fault prote...

Any item of equipment that incorporates high voltage control components and a user interface has to be designed with safety clearly in mind in order to protect users from electric shock. This involves equipment meeting isolation standards through the use of insulation layers. Most standards require the user to be protected from electric shock by two levels of protection or a single layer of reinforced insulation protection. Shaun Milano of Allegr...

Offering constant-current output to drive high-power LEDs in automotive applications, two single-IC switching regulators have been introduced by Allegro MicroSystems Europe. These devices are the industry’s first, according to the manufacturer, to allow LED dimming without the need for local MCU, timer-based or PWM dimming control.

Allegro MicroSystems Europe has introduced two adjustable high frequency DC/DC step-down switching regulators with an integrated high-side power MOSFET suitable for power supply requirements of the latest infotainment systems. Allegro’s A8586 provides up to 3.5A output current; while the A8587 has output current of up to 2.0A. Both devices are automotive AEC-Q100 qualified and incorporate current mode control for fast transient response.

Allegro MicroSystems Europe announces a family of full bridge gate-driver ICs designed to drive a wide range of DC brushed motors with simple logic from an MPU. The A4955, A4956 and A5957 suit industrial and consumer applications such as robotic vacuum cleaners, vending machines, cash dispensing machines, coffee vending machines, ticketing machines, sewing machines and automatic gates/turnstiles.

Two current sensor ICs from Allegro Microsystems are economical options for use in industrial, commercial, and communication systems that require very high voltage isolation, says the company.

The A1335 from Allegro MicroSystems Europe is a new 360° contactless high-resolution programmable magnetic angle position sensor IC designed for use in digital systems in automotive and related applications involving rotating shaft sensing.

The A4481 from Allegro MicroSystems Europe is an AEC-Q100 qualified linear voltage regulator IC with built-in control, diagnostics and protection features that address the requirements of automotive applications. The device regulates input voltages between 5.25 and 40V down to an output voltage of 5V ±1%, and is able to supply up to 50mA of load current.

Allegro MicroSystems Europe has announced a integrated bipolar stepper motor driver IC with built-in translator for easy operation. Allegro’s A5984 is designed to operate bipolar stepper motors from full-step up to 1/32 step modes that are selectable by MSx logic inputs.

Claimed to be the world’s first LED driver IC to feature an integrated Hall-effect switch, the A1569 has been introduced by Allegro MicroSystems Europe. A single silicon chip integrates: a Hall plate, a small-signal amplifier, chopper stabilisation, a Schmitt trigger and an LED driver with soft on/off and short circuit and thermal protection with automatic recovery.

The latest A8591 from Allegro MicroSystems Europe is a buck regulator IC designed to meet the power-supply requirements of the latest automotive infotainment systems. It is available in fixed 5V or 3.3V regulated output voltage configurations. The new AEC-Q100 qualified device provides all the control and protection circuitry of a 2A regulator circuit with ±1% output voltage accuracy.

The A4409 from Allegro MicroSystems Europe is a power management IC that uses a buck or buck/boost pre-regulator to efficiently convert automotive battery voltages into a tightly regulated intermediate voltage, complete with control, diagnostics and protection features.

The A1262 from Allegro MicroSystems Europe is a unique dual-channel Hall-effect latch featuring 2D sensing via a combination of vertical and planar Hall elements. The quadrature outputs of the A1262 allow rotation direction and position to be determined in applications such as sensing a rotating ring-magnet target. The unique 2D operation of the combined planar and vertical Hall elements allows the end user to achieve a suitable 90° of phase ...

Allegro MicroSystems has announced that its A115x family of two-wire unipolar Hall-effect switches is now available with a package option that eliminates the need for an external capacitor and the associated PCB. The UB package saves size, component count and assembly cost, and significantly simplifies the design process.

The A1245 from Allegro MicroSystems Europe is a two-wire Hall-effect latch with high magnetic sensitivity and excellent EMC performance in automotive and industrial speed/position sensing applications. The A1245 latch is produced using Allegro's advanced BiCMOS wafer fabrication process, and implements a high-frequency 4-phase chopper-stabilisation technique to achieve magnetic stability from -40 to +150°C.

The A5929 from Allegro is a full-bridge gate driver IC designed to drive N-channel external power MOSFETs in automotive applications including Integrated Starter Generator (ISG) systems. The device incorporates a specially designed charge pump regulator that provides a full gate drive voltage of greater than 10V at battery voltages down to 7V and allows operation with reduced gate drive at battery voltages down to 5.5V.

  Extending its portfolio of automotive regulator ICs, Allegro MicroSystems Europe has introduced two high output current devices suiting USB power applications. The A8652 and A8653 synchronous buck regulator ICs provide tight load regulation over a wiring harness without the need for remote sense lines.

The latest product from Allegro MicroSystems Europe has been announced, the A8654 is a high-output current synchronous buck regulator IC that can produce a 3A steady-state load current from an input voltage ranging from 4 to 36V. The device integrates low 'on' resistance high-side MOSFETs and low-side n-channel MOSFETs and utilises external compensation to accommodate a wide range of power components.

Designed for high-speed motor position sensing in safety-critical automotive applications, the A1331 and A1334 contactless, Hall-effect based magnetic sensor ICs have been announced by Allegro MicroSystems Europe. The dual-die devices are based on vertical Hall-effect technology with system-on-chip architecture that provides fast output refresh rates and low signal path latency.