Synchronous Buck Regulator features 2.4 MHz capability.

Press Release Summary:



Integrating high-side, P-channel MOSFET and low-side, N-channel MOSFET, Model A8650 regulates input voltages from 2.5–5.5 V, down to output voltages as low as 0.8 V, and is able to supply at least 2 A of load current. AEC-Q100 qualified unit incorporates current-mode control to provide compensation, loop stability, and fast transient response. Available in 10-pin eMSOP package, adjustable frequency PWM regulator is suited for automotive instrument clusters, HVAC, navigation, and audio systems.



Original Press Release:



Allegro MicroSystems, LLC Announces a New 2 A Synchronous Buck Regulator with Power-OK



AEC Q100 Qualified and 2.4MHz Capability



Worcester, MA - Allegro MicroSystems, LLC announces a new adjustable frequency, high output current, PWM regulator that integrates a high-side, P-channel MOSFET and a low-side, N-channel MOSFET. Allegro’s A8650 incorporates current-mode control to provide simple compensation, excellent loop stability, and fast transient response. This robust device is targeted at the automotive market with end applications to include instrument clusters, HVAC, navigation, and audio systems.



The A8650 utilizes external compensation to accommodate a wide range of power components to optimize transient response without sacrificing stability. This new device regulates input voltages from 2.5 V to 5.5 V, down to output voltages as low as 0.8 V, and is able to supply at least 2 A of load current.



Protection features include VIN under voltage lockout (UVLO), cycle-by- cycle over current protection (OCP), hiccup mode short circuit protection (HIC), over voltage protection (OVP), and thermal shutdown (TSD). In addition, the A8650 provides open-circuit, adjacent pin short-circuit, and short-to-ground protection at every pin to satisfy the most demanding automotive applications.



The A8650 is available in a 10-pin eMSOP package (suffix LY) with exposed pad for enhanced thermal dissipation.  It is priced at $1.39 in quantities of 1,000.



Allegro MicroSystems, LLC is a leader in developing, manufacturing and marketing high-performance semiconductors. Allegro's innovative solutions serve high-growth applications within the automotive market, with additional focus on office automation, industrial, and consumer/communications solutions. Allegro is headquartered in Worcester, Massachusetts (USA) with design, applications, and sales support centers located worldwide. Further information about Allegro can be found at www.allegromicro.com.



Contact information: Stephanie Fennelley, Allegro MicroSystems, P.O. BOX 15036, Worcester, MA 16150036

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