Hi
i'm trying to find a LT1585CM 3,3V too but even RS Components, doesn't have it in stock.
It is a D2PAK package (SMD).
I have found a similar component at RS
LM1084is-3.3 (5 Amp)
cod. 349-4379
but i'm not 100% sure of it.
Take a look and let me know.
Bye
PS- i'm not be able to find another component for the CSPPC.
It is a LTC1430CS (SO16)
EDIT- the exact cod of the 3.3 voltage regulator is:
LT1585CM 3,3