EUP3270 降压芯片4A同步整流降压转换器

　　DESCRIPTION

　　The EUP3270 is a synchronous step-down converter

　　capable of driving 4A continuous load with excellent

　　line and load regulation. The EUP3270 operates in

　　either CC (Constant Current) mode or CV (Constant

　　Voltage) mode with an input voltage range from 4.5V

　　to 30V. The EUP3270 provides programmable cable

　　compensation by adjusting external resistor divider.

　　External shutdown function can be controlled by

　　pulling COMP pin to a level below 0.14V.

　　Fault protection includes secondary cycle-by-cycle

　　current limit, short circuit protection and thermal

　　shutdown. Internal soft-start minimizes the inrush

　　supply current and the output overshoot at initial

　　startup.

　　The EUP3270 is available in SOP-8 (EP) package.

　　FEATURES

　　4.5V to 30V Wide Input Operating Range

　　80kHz~800kHz Switching Frequency Selection

　　CC/CV Mode Control

　　Up to 4A Output Current

　　+/- 1.5% Voltage Reference Accuracy

　　+/- 4% Constant Current Accuracy

　　Programmable Cable Compensation

　　Internal Soft Start

　　Single Pin to External Compensation and

　　Shutdown Control

　　Hiccup Short Circuit Protection

　　Secondary Cycle-by-Cycle Current Limit

　　Thermal Shutdown

　　Available in SOP-8 (EP) Package

　　RoHS Compliant and 100% Lead(Pb)-Free

　　Halogen-Free

　　APPLICATIONS

　　Car Charger

　　Portable charger applications

　　DC/DC converters with current limited