SD6854G

SD6854_Datesheet PRIMARY SIDE CONTROL SMPS WITH BUILT-IN MOSFET DESCRIPTION SD6854 is a primary side control SMPS with built-in MOSFET. It features programmable cable drop compensation function, PFM technology and CV/CC control loop with high reliability and average efficiency. With SD6854, opto-couple and Y capacitor, secondary feedback control, loop compensation circuit can be eliminated for reducing cost. In a certain output voltage range, output voltage can be set through feedback resistor, and output current also can be set through peak current sense resistor. Setting cable drop compensation and peak current compensation are also available for optimized output voltage/current regulation. FEATURES * Built-in high voltage MOSFET * Primary side control * Low start-up current * Leading edge blanking * Pulse-Frequency Modulation(PFM) * Overvoltage protection * Undervoltage lockout * Over temperature protection * Cycle by cycle current limiting * Open loop protection * Cable drop compensation * Peak current compensation APPLICATIONS * Mobile charger * Adaptor with small power * charger for MP3 and other portable apparatus * Stand-by power supply ORDERING INFORMATION Part No. SD6854 SD6854G Package DIP-8A-300-2.54 DIP-8A-300-2.54 Marking SD6854 SD6854G Material Pb free Pb free Packing Tube Tube HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:0.4 2011.02.11 Page 1 of 9 SD6854_Datesheet BLOCK DIAGRAM VCC FB UVLO Reference voltage Bias current Over ...