Do the transient thermal curves of part# LTC1693-5 allow its output to quickly charge a capacitor as depicted here? Less than several microsec charge time is desired. The datasheet lists Rth of 200 C/W, which suggests this is not possible, but I had hoped that the transient thermal curves might indicate this is a possibility at low duty cycles. Such thermal curves are not included in the datasheet. I need to quickly charge and invert a voltage, but all of the charge pumps I've seen so far are much too slow and/or have soft starts that are not suitable for fast use.
If the answer is no, is it also no for parts LTC4449 and LTC4449A-5?