Voltage Regulators - Switching Regulators 4A SupIRBuck Reg 600kHz, 2.5-21V in

INTERNATIONAL RECTIFIER IR3812MTR1PBF REGULATOR, ADJ VOLTAGE, 4A, 15QFN

INTERNATIONAL RECTIFIER IR3810MTR1PBF REGULATOR, ADJ VOLTAGE, 12A, 15QFN

Infineon, IR3811MTR1PBF Step-Down Switching Regulator 7A Adjustable, 0.6 12 V, 15-Pin QFN
Switching Regulator/Controller, Voltage-mode, 4A, 1650kHz Switching Freq-Max
IR3821 Series 21V 300kHz 9A Wide-Input Voltage Synchronous Buck Regulator QFN-15

Switching Controller, Voltage-mode, 6A, 1500kHz Switching Freq-Max, 4 X 5 MM, HALOGEN FREE AND ROHS COMPLIANT, PQFN-17