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The RT8202L/M PWM controller provides the high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high voltage batteries to generate low voltage CPU core, I/O, and chipset RAM supplies in notebook computers.<br />The constant-on-time PWM control scheme handles wide input/output voltage ratios with ease and provides 100ns "instant-on" response to load transients while maintaining a relatively constant switching frequency.<br />The RT8202L/M achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current mode PWMs. Efficiency is further enhanced by its ability to drive very large synchronous rectifier MOSFETs. The RT8202L is available in a WQFN-16L 4x4 package and the RT8202M is available in a WQFN-16L 3x3 package.</div>
RT8202L/RT8202M Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>Ultra-High Efficiency </li><li>Resistor Programmable Current Limit by Low Side R<sub>DS(ON)</sub> Sense (Lossless Limit) </li><li>4700ppm/°C R<sub>DS(ON)</sub> Current Sensing </li><li>Quick Load Step Response within 100ns </li><li>1% V<sub>FB</sub> Accuracy over Line and Load </li><li>Adjustable 0.75V to 3.3V Output Voltage Range </li><li>3V to 26V Battery Input Voltage Range </li><li>Resistor Programmable Frequency </li><li>Integrated Bootstrap Switch </li><li>Over Voltage Protection </li><li>Under Voltage Protection </li><li>Voltage Ramp Soft-Start </li><li>Built In Soft Discharge Output </li><li>Power Good Indicator </li><li>RoHS Compliant and 100% Halogen Free </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>Notebook Computers </li><li>CPU Core Supply </li><li>Chipset/RAM Supply as Low as 0.75V </li></ul></div>
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