28V, 1.5A, 1.4MHz Step-Down DC/DC Converter in SOT23-6 FEATURES • Wide 4.5V to 28V Input Voltage Range • 1.5A Output Current (12VIN to 5VOUT) • Output Adjustable Down to 0.81V • 0.3Ω Internal Power MOSFET • Up to 92% Efficiency • Stable with Low ESR Ceramic Output Capacitors • Fixed 1.4MHz Operating Frequency • Internal Soft-Start Function • Over Current Protection with Hiccup-Mode • Thermal Shutdown • Available in a SOT23-6 Package