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<!-- Paste General Description --><p align="justify">The RT7220B is a high performance Synchronous Rectifier (SR) controller for flyback converters operating in the Continuous Conduction Mode (CCM), the Discontinuous Conduction Mode (DCM) and the Quasi-Resonant (QR) mode. The RT7220B senses the drain voltage of MOSFET to determine SR gate on/off so as to minimize turn-off dead-time and enhance efficiency. </p><p align="justify">The RT7220B is such a special design to support a wide output voltage range of 3.3V to 13V, of which a built-in HV LDO provides sufficient drive voltage for the MOSFET gate driver at low output voltage. </p><p align="justify">Furthermore the RT7220B offers a Green Mode operation, in light load condition, by which the RT7220B counts the gate pulse of MOSFET to determine when to enter green mode to reduce operation current under 160μA.</p>
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<li class="mv5"> Suitable for Low-Side SR Control of Flyback in CCM, DCM and Quasi-Resonant Mode<br /></li><li class="mv5"> Suitable for 3.3V to 13V V<sub>OUT</sub> Range<br /></li><li class="mv5"> <1.2mA Operating Current in Normal Mode (Without SR Driver)<br /></li><li class="mv5"> <160μA Operating Current in Green Mode<br /></li><li class="mv5"> Built-in HV LDO to Supply SR Driver when V<sub>OUT</sub> Lower than 5V<br /></li><li class="mv5"> Automatic Tracking Control to Optimize Efficiency<br /></li><li class="mv5"> 180kHz Maximum Operation Frequency<br /></li><li class="mv5"> Protection<br />► SR Gate Driver with 6V Clamp<br />► SR Gate Initial Output Low Clamping Voltage before Start-Up<br />► Optional Minimum Period Protection<br />► Optional SR Minimum Off-Time<br />► VG Fast Turn-Off (The Total Delay is Less than 50ns)</li>
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<li class="mv5"> Travel Adapters with Fast Charge Protocols (e.g., FCP, SCP, AFC and QC2.0/QC3.0)<br /></li><li class="mv5"> Travel Adapters with USB PD Type-C Control<br /></li><li class="mv5"> Netcom Adapters</li>
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