Allegro MicroSystems’ latest adjustable high-frequency dc/dc step-down switching regulators with an integrated high-side power MOSFET meet the power supply requirements of the latest infotainment systems. The A8586 provides up to 3.5A output current, while the A8587 has an output current up to 2A. Both devices are automotive, AEC-Q100 qualified and incorporate current-mode control. The wide input range of 3.8 to 36 V makes both devices suitable for a wide range of step-down applications, including those in an automotive input environment. Battery-driven “keepalive” applications benefit from the low 30 μA operational quiescent current. Both devices are designed to robustly handle a load dump condition with 40 V maximum rating as well as idle-stop and cold crank conditions with 3 V UVLO rating. Both the A8586 and A8587 incorporate frequency foldback to help prevent inductor current runaway during startup and provide enhanced dropout performance. The A8587 also has a Negative Power-On-Reset (NPOR) function to indicate in-regulation and out-of-regulation status. The A8586 is available in DFN-10 and SOIC-8 packages while the A8587 is available in a DFN-10 package. Pricing starts at $0.99 each/1,000 depending on the device.
Allegro MicroSystems
Worcester, MA
508-853-5000
http://www.allegromicro.com
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