CAT7105 Datasheet | Chip Advanced Technology

2.0A High Efficiency Step-Down DC/DC Converter Free Datasheet http://../ 2.0A High Efficiency Step-Down DC/DC Converter Features High Efficiency up to 95% 4.75V to 23V Wide Input Voltage Range Output Adjustable from 1.23 to 21V 2.0A Output Current 380k Hz constant Frequency Operation Current Mode Operation Over-temperature Protected Over Current Protection Under Voltage Lockout 25µA Shutdown Current SOP8 Package Ro HS pliant (100% Green available) Application Set-Top-Box, DVD, LCD Displays Battery Charger and High Power LED Power Supply Distributed Power System Data m. x DSL CPE Pin Configuration General Description The CAT7105 is a high efficiency and high output current step-down DC/DC converter that integrates a low resistance high side NMOS. Including on the substrate with the listed Features are a high performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an under voltage lockout circuit to prevent start up until the input voltage reaches 4.75V; an internally set soft start circuit to limit inrush currents; and other Features include an over current protection and thermal shutdown. The CAT7105 is available in a 8 pin SOIC package. Ordering Information Part Number CAT7105CA Package 8L SOP (Green) Ship 2500/ Tape & Reel The CAT logo is a registered trademark of Chip Advanced Technology 2007 Chip Advanced Technology Inc. - All Right Reserved. May-2007 Rev:0.94 2/12 Pin Description Pin 1 2 3 4 5 Symbol Description BS VIN SW GND FB High Side Gate Drive Boost Input. A capacitor must be connected from SW to BS. This capacitor boosts the gate drive to the internal NMOS above VIN to fully turn it ON. Power Supply Pin. The input voltage for the power supply is connected to Pin2. Power Switch Output. This is the output of a power MOSFET switch connected directly to the input voltage. Ground Pin. This is the ground reference connection for all ponents in...