EUP3270 Datasheet | Eutech Microelectronics

CC/CV Mode Synchronous Step-Down Converter 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 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 EUP3270 is available in SOP-8 (EP) package. Features 4.5V to 30V Wide Input Operating Range 80k Hz~800k Hz Switching Frequency Selection CC/CV Mode Control Up to 4A Output Current +/- 1.5% Voltage Reference Accuracy +/- 4% Constant Current Accuracy Programmable Cable pensation Internal Soft Start Single Pin to External pensation and Shutdown Control Hiccup Short Circuit Protection Secondary Cycle-by-Cycle Current Limit Thermal Shutdown Available in SOP-8 (EP) Package Ro HS pliant and 100% Lead(Pb)-Free Halogen-Free APPLICATIONS Car Charger Portable charger applications DC/DC converters with current limited Typical Application Circuit DS3270 Ver1.3 Dec. 2016 Figure 1. 150KHz Operating Frequency Application Circuit Typical Application Circuit (continued) Figure 2. 340KHz Operating Frequency Application Circuit Block Diagram Figure 3. Functional Block Diagram DS3270 Ver1.3 Dec. 2016 Pin Configurations Package Type Pin Configurations SOP-8 (EP) Pin Description Pin Name SOP-8 (EP) DESCRIPTION VIN GND P FB Input Supply Pin. Ground. Loop pensation pin. Drive P voltage logic low to turn off the converter. Output Feedback Input. Current sense input...