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The RT2875A/B is a high efficiency, current-mode synchronous DC-DC step-down converter that can deliver up to 3A output current over a wide input voltage range from 4.5V to 36V. The device integrates 95mΩ high-side and 70mΩ low-side MOSFETs to achieve high conversion efficiency. The current-mode control architecture supports fast transient response and simple external compensation. A cycle-by-cycle current limit function provides protection against shorted output and an external soft-start eliminates input current surge during start-up. The RT2875A/B provides complete protection functions such as input under-voltage lockout, output under-voltage protection, over-current protection and thermal shutdown. The RT2875A/B is available in the thermal enhanced TSSOP-14 (Exposed Pad) package.
RT2875A/RT2875B Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>3A Output Current </li><li>Internal N-MOSFETs </li><li>Current Mode Control </li><li>Adjustable Switching Frequency : 300kHz to 2.1MHz </li><li>Adjustable Current Limit : 1.5A to 6A </li><li>Synchronous to External Clock : 300kHz to 2.1MHz </li><li>Adjustable Output Voltage from 0.6V to 24V </li><li>High Efficiency Up to 95% </li><li>Stable with Low ESR Ceramic Output Capacitors </li><li>Cycle-by-Cycle Current Limit </li><li>Input Under-Voltage Lockout </li><li>Output Under-Voltage Protection </li><li>Thermal Shutdown </li><li>AEC-Q100 Grade 2 Certification </li><li>RoHS Compliant and Halogen Free </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>Point of Load Regulator in Distributed Power Systems </li><li>Digital Set Top Boxes </li><li>Broadband Communications </li><li>Vehicle Electronics </li></ul></div>
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