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Product Spec Banner
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The RT9917 is a complete power-supply solution for digital still cameras and other hand-held devices.<br />It integrates :<br />CH1 : Boost DC-DC converter with load disconnect controller (SW1).<br />CH2 : Selectable Boost/Buck DC-DC converter<br />CH3 : Step-down DC-DC converter with internal compensation.<br />CH4 : Step-down DC-DC converter with internal compensation.<br />CH5 : DC/DC converter with HV NMOS, internal compensation and load disconnect (SW5) for CCD positive supply.<br />CH6 : DC/DC converter with HV PMOS for CCD negative supply.<br />CH7 : WLED driver with HV NMOS, internal compensation and allow for PWM dimming.<br />SW1 : Load disconnect controller for CH1.<br />SW5 : Load disconnect switch for CH5.</p>
RT9917 Typical Circuit
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i18n(tab-item.product-feature-section.title)
productFeatureSection
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parameterSection
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<div class="spec-list"><ul class="lv1"><li>1 Channel Boost/Buck Selectable by SEL Pin </li><li>2 Selectable On/Off Sequence Set by SEQ Pin </li><li>4 Channels with Internal Compensation </li><li>Provide Charge Pump Voltage to Enhance NMOS Gate Driving Capability for Alkaline Battery Input </li><li>All Power Switches Integrated </li><li>Syn Step-Down DC/DC Converter♦ Up to 95% Efficiency♦ 100% <sub>(MAX)</sub> Duty Cycle </li><li>Syn Step-Up DC/DC Converter♦ Adjustable Output Voltage♦ Up to 95% Efficiency </li><li>Open LED Protection </li><li>Transformerless Inverting Converter for CCD </li><li>Fixed 1MHz Switching Frequency </li><li>Compact 40-Lead WQFN Package </li><li>RoHS Compliant and 100% Lead (Pb)-Free </li></ul></div>
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RT9917 Ordering Information
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RT9917
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RT9917
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<div class="spec-list"><ul class="lv1"><li>Digital Still Camera </li><li>PDA </li><li>Portable Device </li></ul></div>
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