The new
Allegro Microsystems adjustable high-frecuency DC-DC step-down sitching
regulators with an integrated high-side power MOSFET are ideal for power supply
requirements of the lastest systems, The Allegro series A8568
provides up to 3.5 A output current while the A8587 has output
current up to 2.0 A, both devices are automotive, AEC Q100 qualified and
incorporated with current-mode control for fast transient response.
The
devices counts with a wide input rage of 3.8 to 36V which makes both of
them suitable for a wide range of step-down applications including those
in an automotive input environment. Battery-driven “keep-alive” applications
benefits from the lowest to the highest range and operational current, both
devices are incorporated with current mode control for fas transient control,
are easy to manage and robustly handle.
These new
regulators maintain high-efficiency across a wide range of loads in the PWM
mode and incorporate pulse frequency modulation (PFM) as the load reduces. This
in turn reduces switching and gate driver losses at light loads. Both the A8586
and A8587 incorporate frequency foldback to help prevent inductor current
runaway during startup and provide enhanced dropout performance.
These new
generation of regulators maintain high-efficency across a wide range of
loads in the pwm and incorporate pulse frecuency modulation (PFM) as the load
reduces., this reduces the switching and gate driver losses at light loads.
Robust
protection features makes them extensively safety for their uses, the current
limit at the pulse by pulse and the hiccup mode-short-circuit protection makes
them a great choice.
Negative
Power-On-Reset (NPOR) function to indicate in-regulation and out-of-regulation
status.
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