Texas Instruments
IC REG BUCK 12V 3A TO263-7. Switching Voltage Regulators SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync 7-DDPAK/TO-263 -40 to 125
STMicroelectronics
IC REG BUCK ADJ 1.5A 16DIP. Switching Voltage Regulators 5.0 to 40V Step-Down
Monolithic Power Systems Inc.
IC REG BUCK ADJ 1A. Switching Voltage Regulators 1A/50V, 4MHz HF Step DownSwitch Regulator