EUP3482 2A, 30V, 340KHz Synchronous Step-Down Converter DESCRIPTION FEATURES The EUP3482 is a synchronous current mode buck regulator capable of driving 2A continuous load current with excellent line and load regulation. The EUP3482 can operate with an input range 4.5V to 30V and the output can be externally set from 0.923V to 12V with a resistor divider. z z z z z z z z z z z Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. In shutdown mode the regulator draws 1µA of supply current. Programmable soft-start minimizes the inrush supply current and the output overshoot at initial startup. The EUP3482 require a minimum number of external components. z z 2A Output Current 35V Input Surge Protection Integrated 175mΩ/125mΩ DMOS Switches 4.5V to 30V Input Operating Range Output Adjustable from 0.923V to 12V Up to 93% Efficiency 1µA Shutdown Current Fixed 340KHz Frequency Programmable Soft-Start Thermal Shutdown and Overcurrent Protection Input Supply Overvoltage and Undervoltage Lockout Available in SOP-8 Package RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free APPLICATIONS z z z z Distributed Power Systems Networking Systems PC Monitors Portable Electronics Typical Application Circuit Figure 1. 12V to 3.3V/5V Application Circuit DS3482 Ver1.0 Oct. 2009 1