AS3635 Datasheet | austriamicrosystems

Technical coantmesnt As Gtill valid Xenon Flash Driver with 5V IGBT Control 1 General Description The AS3635 is a highly integrated photoflash charger with build in IGBT driver. A build in 5V charge-pump guaranties constant IGBT drive at any battery voltage. The build in timer turns off the charge-pump 20 seconds after charging. In circuit fuse trimming allows to set the voltage on the photoflash capacitor to ±3% accuracy. The AS3635 is available in a space-saving WL-CSP package measuring only 1.5mm x 1.5mm and operates over the -30ºC to +85ºC temperature range. Warning: Lethal voltages are present on applications using AS3635! Do not operate without training to handle high voltages. Figure 1. Typical Operating Circuit 2 Key Features Build in 5V charge-pump for IGBT gate drive Photoflash voltage accuracy programmable to ±3% (in circuit One Time Programmable - OTP) Trip voltage accuracy ±1.5% Small Size 1.5mm x 1.5mm x 0.6mm PCB: No microvias need Average input current < 320m A Few external ponents - No Schottky-Diode needed - No output voltage divider needed Reliable Flash on/off for IGBT timing. Charge time < 4sec @ Vbat>2.7V, CFLASH =22µF Charge plete indicator Undervoltage lockout Available in a tiny WL-CSP Package 3x3 balls 0.5mm pitch, 1.5x1.5mm package size 3 Applications Xenon Flash driver for mobile phones, PDA and DSC # # +5 "#$% &'% #(" # ! (. ' "#$% "#$% + #(" 5 6- #(",- $$...