Photoflash capacitor IC condenses charging solution

Milpitas, Calif. – Linear Technology’s LT3485 family integrates a complete photoflash capacitor charger, IGBT drive stage, and output voltage monitor in a 3-by-3 mm DFN package. The chip’s control circuit is designed to allow the use of two very small “standardized” transformers (5.8-by-5.8-by-3 mm). No external components are required to set the output voltage. During charge, an output proportional to the photoflash capacitor voltage is available for monitoring. Input current is tightly controlled to provide consistent charge time.