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The RT8058 is a current mode PWM step-down converter. The chip is ideal for fixed frequency and low ripple applications over full range of load conditions. Its input voltage range is from 2.6V to 5.5V with a constant 1MHz switching frequency that allows it to adopt tiny, low cost capacitors and inductors with 2mm or less in height making it ideal for single-cell Li-lon/polymer battery applications. The low on resistance internal MOSFET can achieve high efficiency without the need of external schottky diodes in wide operating ranges and the output voltage is adjustable from 0.6V to 5V that can provide up to 2A load current. The RT8058 operates at 100% duty cycle for low dropout operation that extends battery life in portable devices.<br />The RT8058 is available in a WQFN-16L 3x3 package.
RT8058 Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>0.6V Reference Allows Low Output Voltage </li><li>Low Dropout Operation : 100% Duty Cycle </li><li>2A Load Current </li><li>< 2μA Shutdown Current </li><li>Up to 95% Efficiency </li><li>No Schottky Diode Required </li><li>1MHZ Constant Switching Frequency </li><li>Low R<sub>DS(ON)</sub> Internal Switches </li><li>Internally Compensated </li><li>Internal Soft-Start </li><li>Over temperature Protection </li><li>Short Circuit Protection </li><li>Small 16-Lead WQFN Package </li><li>RoHS Compliant and 100% Lead (Pb)-Free </li></ul></div>
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RT8058 Ordering Information
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<div class="spec-list"><ul class="lv1"><li>Portable Instruments </li><li>Microprocessors and DSP Core supplies </li><li>Cellular Telephones </li><li>Wireless and DSL Modems </li><li>Digital Cameras </li><li>PC Cards </li></ul></div>
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