How to size a capacitor for a bunch of led's

[alank2]

Hi Everyone,

I'm thinking of making a ht1632c based display using the ltp-305's from digikey/mouser that are a 5x7 matrix with decimal point.  I like these displays because they are somewhat old style with led's shaped in a matrix encased in plastic.  This is a for fun project.  Because of the way the ht1632c multiplexes I'm going to use 24x16 mode which allows me to drive 8 digits, 4 wide (6 columns each) x 2 rows (14 rows).  3mA average for each dot is fine, so the pulse for each of the 24 will be 3mA*16 or 48mA.  0.048*24 leds is 1.152A, so it might go from needing 1.152A for all led's on and 0A for all led's off.  In practice, I plan to use a standard 5x7 character set which will typically not involve all being on at the same time.  How do I size a capacitor for the display board that can handle this?

Thanks,

Alan

[alank2]

Is there a formula to figure out this type of thing?