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The RT4733 is a highly integrated power solution with a buck-boost converter and an inverting charge pump to generate negative output voltage. The output voltages can be adjusted via the SWIRE interface protocol. The part maintains high efficiency by utilizing a -0.5x/-1x mode fractional charge pump. With an input voltage range of 2.9V to 5.5V, the RT4733 is optimized for products powered by single-cell batteries and can supply symmetrical output currents up to 150mA. The RT4733 is available in the WL-CSP-21B 1.31x2.91 (BSC) package.The recommended junction temperature range is -40°C to 125°C, and the ambient temperature range is -40°C to 85°C.
RT4733 Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>2.9V to 5.5V Supply Voltage Range </li><li>Positive OVDD Voltage from 2.8V to 4.6V </li><li>Negative OVSS Voltage from -0.6V to -4.2V </li><li>Positive AVDD Voltage from 2.8V to 3.3V </li><li>-0.5x/-1x VON Negative Charge Pump </li><li>Maximum Output Current up to 150mA for AMOLED Positive & Negative Power Supply in Symmetry Mode </li><li>Maximum Output Current up to 60mA for AMOLED Positive & Negative Power Supply in Asymmetry Mode </li><li>Maximum Output Current up to 30mA for AVDD Output Supply </li><li>Excellent Line and Load Transient/Regulation </li><li>Discharge/Hi-Z Function </li><li>Low Quiescent Current < 1μA in Shutdown Mode </li><li>UVLO, OCP, SCP, OTP Protection </li><li>Available in 21-Ball WL-CSP Package </li></ul></div>
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RT4733 Ordering Information
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<div class="spec-list"><ul class="lv1"><li>AMOLED Panels </li><li>Wearable Devices </li></ul></div>
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