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Product Spec Banner
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The RT9481 is a high integration and easy to use power solution for Li-ion power bank and other powered handheld applications. We call it EZPBS<sup>TM</sup> (Easy to Use Power Bank Solution). This single chip includes a Switching Charger with Boost function, Analog to Digital Converter (ADC), USBOUT Load Switch, Adapter Detection with BC1.2, DCP controller and LDO.
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<div class="spec-list"><ul class="lv1"><li>High Accuracy Voltage/Current Regulation <ul class="lv2"> <li></li><li>±1% Charge Voltage Regulation </li><li>±0.1A Charge Current Regulation </li><li>±3% Boost USBOUT Voltage Regulation </li></ul> </li><li>Thermal Shutdown Protection </li><li>Reverse Leakage Protection to Prevent Battery Drainage. </li><li>Built-In USBOUT DCP Controller </li><li>Built-In USBOUT Attach/Detach Detection </li><li>Built-In USBOUT Light Load Detection </li><li>Built-In Load Switch with Current Regulation </li><li>Thermal Regulation and Output Short Current Protection </li><li>Built-In Adapter Detection with BC1.2 </li><li>Built-In Accurate ADC to Measure VBAT, VBUS, TS, IBAT , USBOUT and IUSBOUT </li><li>Built-In LDO </li><li>Interrupt Output for Event Notification </li><li>I<sup>2</sup>C Interface with 400kHzCharge Mode </li><li>Charge Voltage Regulation : 3.65V to 4.6V </li><li>Charge Current Regulation : 0.7A to 2.7A </li><li>Minimum Input Voltage Regulation (MIVR) : 4.2V to 4.8V </li><li>Average Input Current Regulation (AICR) : 0.1A to 2A </li><li>Charge Termination Current : 0.15A to 0.6A </li><li>Pre-charge Threshold : 2.3V to 3.8V </li><li>Pre-charge Current : 0.2A to 0.5A </li><li>Thermal Regulation </li><li>VMID Under Voltage Protection </li><li>VBUS Over Voltage Protection </li><li>Battery Over Voltage Protection </li><li>Bad Adapter DetectionBoost Mode </li><li>Boost Output Current Up to 3A </li><li>Boost Output Voltage : 3.65V to 5.2V </li><li>Battery Under Voltage Protection : 2.5V to 3.2V </li><li>VMID Over Voltage Protection </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>Power Bank </li></ul></div>
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