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LC5556LD Fiches technique(PDF) 8 Page - Sanken electric |
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LC5556LD Fiches technique(HTML) 8 Page - Sanken electric |
8 / 11 page 8 SANKEN ELECTRIC CO., LTD. LC5550LD-DS Single-Stage Power Factor Corrected High Efficiency Non-Isolated Buck LED Driver LC5550LD Series July 9, 2012 Functional Block Diagram S/GND TSD LEB D/ST STARTUP Reg Bias UVLO VCC OCP/BD OVP OSC OCP Detection Bottom Reg Control Feedback OLP ⑧ ① ② ③ ④ Drv COMP NF ⑥ ISENSE Q S R OTA Control Part ⑤ Reg Pin List Table Number Name Function 1 S/GND MOSFET source and GND pin for the Control Part 2 VCC Supply voltage input and Overvoltage Protection (OVP) signal input 3 OCP/BD Overcurrent Protection (OCP), quasi-resonant signal input, and Overvoltage Protection (OVP) signal input 4 COMP Feedback phase-compensation input 5NF No function; must be externally connected to S/GND pin with as short a trace as possible, for stable operation of the IC 6 ISENSE Output current sensing voltage input 7 – Pin removed 8 D/ST MOSFET drain pin and input of the startup current 1 2 3 4 8 6 5 D/ST ISENSE NF S/GND VCC OCP/BD COMP Pin-out Diagram |
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