Found 4 alternatives for SIC781CD-T1-GE3 by Vishay Siliconix. Pmic Full Half Bridge Drivers — PowerPAK® MLP66-40.
IC BUCK ADJ 50A 40MLP
IC CTLR PFC STAGE PPAK MLP66-40
IC BUCK ADJ 60A MLP66-40L
IC BUCK ADJ 40A 40MLP