Semiconductors and Semiconductor Equipment
Company Overview of Allegro MicroSystems, LLC
Allegro MicroSystems, LLC develops, manufactures, and markets semiconductors. It offers various integrated circuit (IC) solutions that focus on motor control, regulation, and magnetic field sensing applications. The company’s products include current sensor ICs, magnetic digital position sensor ICs, magnetic linear and angular position sensor ICs, magnetic speed sensor ICs, motor driver and interface ICs, regulators and lighting solutions, and analog IC products; and power management ICs to supply power to microprocessor/DSP plus sensors, transceivers, and other loads. Its products are used in automotive, lighting, consumer electronic, energy-efficient solution, appliance, office automation,...
115 Northeast Cutoff
Worcester, MA 01615
Founded in 1990
Key Executives for Allegro MicroSystems, LLC
President and Chief Operating Officer
Chief Financial Officer, Principal Accounting Officer and Vice President
Executive Vice President, Director, Member of Nominating/Corporate Governance Committee and Member of Compensation Committee
Vice President of Technology Development
Compensation as of Fiscal Year 2016.
Allegro MicroSystems, LLC Key Developments
Allegro Microsystems, LLC Introduces New Dual Full-Bridge PWM Motor Driver IC
Oct 4 16
Allegro MicroSystems, LLC announced a new 40 V dual full-bridge driver capable of driving two DC motors with outputs rated up to 3.2 A. Allegro’s A5995 device includes fixed off-time pulse-width modulation (PWM) regulators for current control. Each DC motor can be controlled in forward, reverse, coast and brake modes with industry standard PHASE, ENABLE inputs. Fast or slow PWM current decay is selected via the MODE input. This new device is targeted at the consumer, industrial and office automation markets with end applications that include, laser, inkjet and label printers, copiers, vending, robot vacuums, and ATM machines. Protection features include thermal shutdown with hysteresis, under voltage lockout (UVLO), crossover current, and over current protection. Low current sleep mode is included to improve efficiency. The A5995 is supplied in a leadless 6 mm × 6 mm × 0.9 mm, 36-pin QFN package with exposed power tab for enhanced thermal performance.
Allegro MicroSystems, LLC Announces New Automotive Multi-Output PMIC With Buck Or Buck/Boost Pre-Regulator
Sep 20 16
Allegro MicroSystems, LLC announced a new power management IC that can be configured as a buck or buck-boost pre-regulator to efficiently convert automotive battery voltages into a tightly regulated intermediate voltage complete with control, diagnostics, and protections. The output of Allegro’s A4413 supplies both a 5 V, 75 mAMAX high-voltage protected LDO for remote sensors (V5P), and a 0.8 to 3.3 V, 800 mAMAX adjustable synchronous buck regulator (ADJ). Designed to supply microprocessor power supplies in high-temperature environments, the A4413 is ideal for under hood and other automotive applications. The A4413 can be enabled by its logic-level (ENB) or high-voltage (ENBAT) input. Diagnostic outputs from the A4413 include a power-on-reset output (NPOR) with a 2 ms rising delay to monitor the synchronous buck, a PowerOK output to monitor the 5 V LDO (POK5V), and an ENBAT status output (ENBATS). Dual band gaps—one for regulation and one for fault detection—improve long-term reliability of the A4413. The A4413 contains a pulse-width window watchdog (PWWD) timer that can be programmed to detect pulse widths from 1 to 2 ms (WDADJ). The watchdog timer has an activation delay that scales with the pulse-width setting to accommodate processor startup. The tolerance of the watchdog’s window can be set to ±8%, ±13%, or ±18% using the WDTOL pin. The watchdog timer has an active-low enable pin (WDENn) to facilitate initial factory programming or field reflash programming. Protection features include under- and overvoltage lockout on both output supply rails. In case of a shorted output, the LDO regulator features fold back over current protection. In addition, the 5 V output is protected from a short-to-battery event. Both switching regulators include pulse-by-pulse current limit, hiccup mode short-circuit protection, LX (regulator output switching node) short-circuit protection to provide protection to the IC from damage in the case of accidental short-circuit from LX pins, missing asynchronous diode protection (VREG only), and thermal shutdown (TSD). The A4413 is supplied in a low-profile 32-lead, 5 mm × 5 mm, 0.5 mm pitch QFN package (suffix “ET”) with exposed thermal pad.
Allegro MicroSystems, LLC Introduces New Bipolar Stepper and High Current Dc Motor Driver IC
Sep 7 16
Allegro MicroSystems, LLC announced a new 40 V motor driver IC capable of driving one stepper motor and one DC motor. The stepper driver outputs are rated up to 1.6 A and the DC driver at 3.2 A. Allegro’s A5989 includes fixed off-time pulse width modulation (PWM) current regulators, along with 2- bit nonlinear DACs (digital-to-analog converters) that allow stepper motors to be controlled in full, half, and quarter step. This new device is targeted at the consumer, industrial and office automation markets with end applications that include, point of sale, lottery, ticketing, laser, inkjet and label printers, copiers, vending, and ATM machines. The A5989 stepper driver PWM current regulator uses the Allegro® patented mixed-decay mode for reduced audible motor noise, increased step accuracy, and reduced power dissipation. The DC driver can operate in forward, reverse, coast and brake modes with either fast or slow PWM decay control. Protection features include thermal shutdown with hysteresis, under voltage lockout (UVLO), crossover current, and over current protection. Low current sleep mode is included to improve efficiency. The A5989 is supplied in a leadless 6 mm × 6 mm × 0.9 mm, 36-pin QFN package with exposed power tab for enhanced thermal performance. The package is lead (Pb) free, with 100% matte-tin lead frame plating.
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