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The RTQ5760 is a simple, easy-to-use, 1A synchronous step-down converter with an input supply voltage range from 2.5V to 6V. The device builds in an accurate 0.6V reference voltage and integrates low R<sub>DS(ON)</sub> power MOSFETs to achieve high efficiency in a SOT-563 (FC) package.The RTQ5760 adopts Advanced Constant On-Time (ACOT<sup>®</sup>) control architecture to provide an ultrafast transient response with few external components and to operate with nearly constant switching frequency over the line, load, and output voltage range. The RTQ5760 operates in automatic PSM that maintains high efficiency during light load operation.The RTQ5760 senses both MOSFETs current for a robust overcurrent protection. The device features cycle-by-cycle current-limit protection and prevents the device from the catastrophic damage in output short circuit, overcurrent, or inductor saturation. A built-in soft-start function prevents inrush current during start-up. The device also includes input undervoltage-lockout, output undervoltage protection, and over-temperature protection to provide safe and smooth operation in all operating conditions. The recommended junction temperature range is -40°C to 125°C.
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<div class="spec-list"><ul class="lv1"><li>Input Voltage Range from 2.5V to 6V </li><li>Integrated 120mΩ and 80mΩ MOSFETs </li><li>1A Output Current, up to 95% Efficiency </li><li>100% Duty Cycle for Lowest Dropout </li><li>1% Internal Reference Voltage </li><li>2.2MHz Typical Switching Frequency </li><li>Power Saving Mode for Light Loads </li><li>Low Quiescent Current: 25μA (Typical) </li><li>Fast Advanced Constant On-Time (ACOT<sup>®</sup>) Control </li><li>Internal Soft Startup (0.6ms) </li><li>Enable Control Input </li><li>Power-Good Indicator </li><li>Both MOSFETs Overcurrent Protection </li><li>Input Undervoltage-Lockout Protection </li><li>Hiccup-Mode Output Undervoltage Protection </li><li>Over-Temperature Protection </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>Mobile Phones and Handheld Devices </li><li>Set-Top Boxes, Cable Modems, and xDSL Platforms </li><li>WLAN ASIC Power / Storage (SSD and HDD) </li><li>General Purpose for POL LV Buck Converters </li></ul></div>
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