ACT4060B

® ACT4060B Rev 1, 23-May-12 18V/2A Step-Down DC/DC Converter FEATURES 2A Output Current Wide 4.5V to 18V Operating Input Range Synchronous Buck Topology Integrated 130mΩ Power MOSFET Switches Output Adjustable from 0.923V to 12V Up to 96% Efficiency Stable with Low ESR Ceramic Output Capacitors Internal Soft Start 1.5mA Low Standby Input Current High Light Load Efficiency Cycle-by-Cycle Over Current Limit Input Under Voltage Lockout Hiccup Protection at Short Circuit and Over Current Low Power Loss at Output Short Frequency Fold Back Protection Low Power Dissipation at Over Current and Short Circuit APPLICATIONS LCD-TV Set-top Box Distributed Power Systems Networking Systems GENERAL DESCRIPTION ACT4060B is a monolithic synchronous buck regulator. The device integrates two 130mΩ MOSFETs, and provides 2A of continuous load current over a wide input voltage of 4.5V to 18V. Current mode control provides ...