New linear current regulator and controller family
Allegro MicroSystems Europe has announced two new adjustable linear current regulators for driving automotive LED arrays. Allegro’s AEC-Q100 qualified A6274 and A6284 devices include many new features designed to further enhance the existing family of linear LED drivers.
These new low-EMI ICs integrate an optional pre-regulator gate drive to dynamically and linearly control an external P-channel MOSFET, which extends the output power capability of a linear LED driver by moving most of the power losses to an external power FET. This eliminates the need for a DC/DC switching solution and its associated inductor, diode and higher EMI.
The ICs sink up to 60 mA (A6274) or 120 mA (A6284) from each of six LED pins, and may also be paralleled to drive higher current LED strings for a total of up to 720 mA. In addition the multiple ICs can be configured in parallel for large lighting systems.
Allegro MicroSystems Europe Ltd
+33 (0) 4 50512359
www.allegromicro.com
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