Texas Instruments
IC REG CTRLR BUCK/BOOST 16DIP. Switching Voltage Regulators Regulating Pulse Width Modulator
Maxim Integrated
IC REG CTRLR BUCK 28TSSOP. Switching Controllers Synch Buck Controller
Linear Technology/Analog Devices
IC REG CTRLR BUCK-BOOST 24SSOP. Switching Voltage Regulators High Power Buck-Boost DC/DC Controller