EUP3482ADIR1

EUP3482A 2A, 30V, 340KHz Synchronous Step-Down Converter DESCRIPTION FEATURES The EUP3482A is a synchronous current mode buck regulator capable of driving 2A continuous load current with excellent line and load regulation. The EUP3482A can operate with an input range 4.5V to 30V and the output can be externally set from 0.923V to 20V with a resistor divider.











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. Automatic pulse skipping mode operation increase efficiency at light loads. The EUP3482A require a minimum number of external components.


2A Output Current Automatic Pulse Skipping Mode at Light Load 35V Input Surge Protection Integrated 160mΩ/110mΩ DMOS Switches 4.5V to 30V Input Operating Range Output Adjustable from 0.923V to 20V Up to 95% Efficiency 1µA Shutdown Current Fixed 340KHz Frequency Programmable Soft-Start Thermal Shutdown and Overcurrent Protection Input Supply Overvoltage and Undervoltage Lockout 230ns Minimum On Time Available in SOP-8 Package RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free APPLICATIONS



Typical Application Circuit Distributed Power Systems Networking Systems PC Monitors Portable Electronics Figure 1. 12V to 3.3V/5V Application Circuit DS3482A Ver1.2 Feb. 2011 1