The A8424 provides a robust Xenon photoflash solution for a wide range of cameras. Its wide battery voltage specifications allow designers to use a common device for camera using 2 or 4 cell Alkaline batteries as well as 1 or 2 cell Lithium ion batteries. Its 55 V rated integrated power switch provides ample design margin, even for the 2 cell Lithium ion battery designs.
The A8424 features a flexible current limit scheme. The current limit is set by an external resistor at ISET, allowing designers to optimize the camera performance. The A8424 is protected against open circuit and short circuit condition on the ISET pin. Once the current limit is set, it can be optionally programmed as a percentage of the set current through a single wire interface, through the CHARGE pin.
The A8424 features an integrated flexible IGBT gate driver, with independent source and sink pins.
The A8424 is available in a 16-contact 3 mm × 3 mm MLP/TQFN package. This small, low profile (0.75 mm) package is ideal for space-constrained applications. It is lead (Pb) free, with 100% matte-tin leadframe plating.