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LNK606DG Datasheet(PDF) 2 Page - Power Integrations, Inc. |
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LNK606DG Datasheet(HTML) 2 Page - Power Integrations, Inc. |
2 / 18 page Rev. F 01/10 2 LNK603-606/613-616 www.powerint.com Pin Functional Description DRAIN (D) Pin: This pin is the power MOSFET drain connection. It provides internal operating current for both start-up and steady-state operation. BYPASS/MULTI-FUNCTIONAL PROGRAMMABLE (BP/M) Pin: This pin has multiple functions: 1. It is the connection point for an external bypass capacitor for the internally generated 6 V supply. 2. It is a mode selection for the cable drop compensation for LNK61X series. FEEDBACK (FB) Pin: During normal operation, switching of the power MOSFET is controlled by this pin. This pin senses the AC voltage on the bias winding. This control input regulates both the output voltage in CV mode and output current in CC mode based on the flyback voltage of the bias winding. The internal inductance correction circuit uses the forward voltage on the bias winding to sense the bulk capacitor voltage. SOURCE (S) Pin: This pin is internally connected to the output MOSFET source for high voltage power and control circuit common returns. Figure 2 Functional Block Diagram. Figure 3. Pin Configuration. PI-4908-041508 SOURCE (S) LEADING EDGE BLANKING + - + - + - DRAIN (D) REGULATOR 6 V BYPASS (BP/M) FEEDBACK (FB) SOURCE (S) FB OUT Reset 6 V 5 V t SAMPLE-OUT t SAMPLE-INPUT V ILIMIT I LIM V ILIMIT V TH t SAMPLE-OUT t SAMPLE-INPUT V ILIMIT 6.5 V Drive I LIM DC MAX DC MAX FB Current Limit Comparator STATE MACHINE CABLE DROP COMPENSATION SAMPLE DELAY THERMAL SHUTDOWN OSCILLATOR FAULT Auto-Restart Open-Loop INDUCTANCE CORRECTION CONSTANT CURRENT D Q PI-3491-012808 3a 3b D S BP/M S S FB P Package (DIP-8C) G Package (SMD-8C) D Package (SO-8C) 8 5 7 1 4 2 S 6 D S BP/M S S FB 8 5 7 1 4 2 S 6 |
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