EUP3452A

EUP3452A 2A,30V,300KHz Step-Down Converter DESCRIPTION The EUP3452A is current mode, step-down switching regulator capable of driving 2A continuous load with excellent line and load regulation. The EUP3452A can operate with an input voltage range from 4.5V to 30V and the output can be externally set from 0.8V to 12V 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. The EUP3452A require a minimum number of external components. FEATURES z z z z z z z z z z z z 35V Input Surge Protection 2A Output Current 0.135Ω Internal DMOS Output Switch 4.5V to 30V Input Operating Range Output Adjustable from 0.8V to 12V Up to 95% Efficiency 1µA Shutdown Current Fixed 300KHz Frequency Thermal Shutdown and Overcurrent Protection Input Supply Overvoltage and Undervoltage Lockout Available SOP-8 Package RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free APPLICATIONS z z z z VÛm w`R yÑb € PC Monitors Distributed Power Systems Networking Systems Portable Electronics Typical Application Circuit ww w.g ofot ech. com Figure 1. 12V to 3.3V/5V Application Circuit DS3452A Ver1.0 Sep. 2010 1 N~§NãtÿmñW3^VÛmw`RyÑb€g–PQlSø Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com EUP3452A Typical Application Circuit (continued) Figure 2. 24V to 3.3V/5V Application C...