Allegro MicroSystems Europes' range of xenon photoflash capacitor charger ICs with integrated IGBT driver circuitry feature selectable primary-peak current settings, an integrated 40 V Mosfet and a small 3 x 3 mm 10-lead MLP package. The A8436, A8438 and A8439 devices combine superior performance levels with fast charge time and 'charge complete' indication. Each device features a flyback converter with an internal 40 V DMOS switch and IGBT driver. The flyback convertor employs a proprietary algorithm to charge the photoflash capacitor rapidly to the desired voltage. The IGBT driver features high switching speed and high drive current capability to allow efficiency switching during 'red-eye reduction' flash mode. Each IC can be operated from a single Li+ battery or two NiMH/alkaline batteries.
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