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The RTQ2117A combines a charging port controller, USB 2.0 high-speed data line (D+/D-) switch and a 3A synchronous buck converter. The RTQ2117A provides the electrical signatures on D+/D- to support charging schemes compatible with the USB 2.0 Battery Charging Specification BC1.2 and Chinese Telecommunication Industry Standard YD/T 1591-2009. Auto-detect mode is also integrated which supports USB 2.0 Battery Charging Specification BC1.2 Dedicated Charging Port (DCP), Divider 3 mode and 1.2V shorted mode to comply with the legacy fast charging mode of mobile devices. The RTQ2117A integrates a high efficiency, monolithic synchronous buck converter that can deliver up to 3A output current from a 3V to 36V wide range input supply and is protected from load-dump transients up to 42V. The RTQ2117A has constant current control to achieve adjustable USB current limit and implement the current sense signal for adjustable USB power output voltage with load line compensation. The converter includes optional spread-spectrum frequency modulation to overcome EMI issue and complete protection for safe and smooth operation in all applied conditions. Protection features include cycle-by-cycle current limit for protection against shorted outputs, soft-start control to eliminate input current surge during start-up, input undervoltage-lockout, output undervoltage protection, output overvoltage protection and over-temperature protection. The RTQ2117A can be used to support Type-A connector. The RTQ2117A is fully specified over the temperature range of T<SUB>J</SUB> = -40°C to 125°C and available in WETD-VQFN-32L 5x5.
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RTQ2117A-QA Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>CDP/SDP Mode per USB BC1.2 </li><li>USB Charging Port Controller - Automatic DCP Modes - DCP Shorted Mode and YD/T 1591-2009 - 2.7V Divider 3 Mode - 1.2V Mode </li><li>High Bandwidth 1.2GHz Data Switches </li><li>Support Mode Change Among SDP/CDP/DCP Auto </li><li>Keep Data Communication During Worse Cold Crank Situation at 3V </li><li>36V 3A Synchronous Buck Converter </li><li>Protection Function - DS+/DS- OVP - Over-Temperature Protection </li><li>Cycle-by-Cycle Overcurrent Limit Protection </li><li>Input Undervoltage Protection - VBUS Overvoltage Protection - Adjacent Pin-Short Protection </li><li>Power Good Indicator </li><li>Enable Control </li><li>HBM 8kV on DS+/DS- Pins </li><li>Wettable Flank Package </li><li>AEC-Q100 Grade 1 Qualified </li><li>Ambient Temperature Range: -40°C to 125°C </li><li>Junction Temperature Range: -40°C to 125°C </li></ul></div>
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RTQ2117A-QA Ordering Information
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<div class="spec-list"><ul class="lv1"><li>Automotive Car Chargers </li><li>USB Power Chargers </li></ul></div>
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