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RT5035A/B is a highly-integrated DSC Power Management IC that contains 7ch switching DC/DC converters and two generic LDOs, one keep-alive low-quiescent LDO for RTC, one load switch with soft-start control and current limit, a switch with reverse leakage prevention for backup battery, and a Real-Time-Clock (RTC) including time counter and 32768Hz oscillator. The DC/DC converters are one low-voltage Step-Up operated in either Async-PFM or Sync-PWM, one current mode Sync Step-Up/Down (Buck-Boost), four Sync Step-Down, and one Asyn Step-Up for WLED driver. All power MOS are integrated. And compensation networks are built in. RT5035A/B uses I<sup>2</sup>C interface to set power-on and power-off timing, output voltage, and WLED current and dimming level, and also access RTC time counters and oscillator fine-tuning. RT5035A/B dedicate for CMOS image sensor application by providing one Sync Step-Down, one LDO, and one load switch. The RT5035A/B also provides rich protection functions include Over-Current Protection, Under-Voltage Protection, Over-Voltage Protection, Over- Temperature Protection, and Over-Load Protection. RT5035A/B is available in WQFN-40L 5x5 package.
RT5035A/RT5035B Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>CH1 Sync Step-Up in PWM Mode or Async Step-Up in Pulse Frequency Mode </li><li>CH2 Current Mode Sync Step-Up/Down </li><li>CH3/CH4/CH5 Current Mode Sync Step-Down </li><li>SW4 Load Switch with Soft-Start Inrush Control And Current Limit </li><li>CH6 Generic Low Voltage LDO for CMOS Sensor </li><li>CH7 WLED Driver in Async Step-Up Mode </li><li>Open LED Protection </li><li>32 Dimming Levels </li><li>CH8 Generic Low Voltage LDO for Multiple Purpose Power Supply </li><li>CH9 Keep-Alive Low-Quiescent LDO </li><li>CH10 Sync Step-Down or Async Step-down in Pulse Frequency Mode for Memory Standby Mode Application </li><li>LV Sync Step-Down DC/DC Converter High Efficiency Up to 95% </li><li>100% (max) Duty Cycle for CH3, CH4, CH5 & CH10 </li><li>I<sup>2</sup>C Control Interface to Program Enable, Power On/Off Delay Time, Output Regulated Voltage, WLED Dimming Current </li><li>RTC Timer And Oscillator </li><li>Fixed 2MHz Switching Frequency for CH1, CH3, CH4, CH5, CH10 </li><li>Fixed 1MHz Switching Frequency for CH2, CH7 </li></ul></div>
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RT5035A/RT5035B Ordering Information
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<div class="spec-list"><ul class="lv1"><li>Digital Cameras </li><li>Portable Instruments </li></ul></div>
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