EUP3271 Datasheet | Eutech Microelectronics

sales.Mr.wang13826508770 .sztssd. CC/CV Mode Synchronous Step-Down Converter DESCRIPTION Features The EUP3271 is a synchronous step-down converter z 4.5V to 36V Wide Input Operating Range capable of driving 4A continuous load with excellent line and load regulation. The EUP3271 operates in either CC (Constant Current) mode or CV (Constant Voltage) mode with an input voltage range from 4.5V z 80k Hz~800k Hz Switching Frequency Selection z CC/CV Mode Control z Up to 4A Output Current to 36V. The EUP3271 provides programmable cable pensation by adjusting external resistor divider. External shutdown function can be controlled by pulling P 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 EUP3271 is available in SOP-8 (EP) package. z +/- 1.5% Voltage Reference Accuracy z z z z +/- 4% Constant Current Accuracy Programmable Cable pensation ly Internal Soft Start n Single Pin to External pensation and O Shutdown Control z z z Hiccup Short Circuit Protection e Secondary Cycle-by-Cycle Current Limit Us Thermal Shutdown Tongsheng Typical Application Circuit z Available in SOP-8 (EP) Package sz Ro HS pliant and 100% Lead(Pb)-Free e Halogen-Free im APPLICATIONS t z Car Charger z Portable charger applications z DC/DC converters with current limited For DS3271 Ver1.0 Jun. 2017 Figure 1. 150KHz Operating Frequency Application Circuit 1 sales.Mr.wang13826508770 .sztssd. Typical Application Circuit (continued) Only Use Figure 2. 340KHz Operating Frequency Application Circuit Block Diagram times Tongsheng For Figure 3. Functional Block Diagram DS3271 Ver1.0 Jun. 2017 2 sales.Mr.wang13826508770 .sztssd. Pin Configurations Package Type Pin Configurations SOP-8 (EP) Pin Description Pin Name SOP-8...