EUP3466 高端车充芯片2.4A.pdf

EUP3466 DS3466 Ver1.0 Mar. 2014 1 CC/CV Mode Step-Down Converter DESCRIPTION The EUP3466 is a step-down converter capable of driving 3A continuous load with excellent line and load regulation. The EUP3466 operates in either CC (Constant Current) mode or CV (Constant Voltage) mode with an input voltage range from 8V to 36V. The EUP3466 provides programmable cable compensation by adjusting external resistor divider. The EUP3466 stops switching when the output reaches over voltage threshold which is programmed by external resistor divider. Fault protection includes secondary cycle-by-cycle current limit, short circuit protection and thermal shutdown. In shutdown mode the regulator draws 3μA of supply current. Internal soft-start minimizes the inrush supply current and the output overshoot at initial startup. The EUP3466 is available in SOP-8 package. Typical Application Circuit FEATURES
8V to 36V Wide Input Operating Range
40V Input Voltage Surge
Fixed 80kHz Switching Frequency
CC/CV Mode Control
Up to 3A Output Current
+/- 1% Voltage Reference Accuracy
+/- 4% Constant Current Accuracy
Programmable Cable Compensation
Internal Soft Start
Output Over Voltage Protection
Foldback Short Circuit Protection
Secondary Cycle-by-Cycle Current Limit
Thermal Shutdown
Available SOP-8 Package
RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free APPLICATIONS
Car Charger
Portable charger applications
DC/DC converters with current limited Figure 1. Application Circuit