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<div align="justify">The RT8205A/B/C dual step-down, switch-mode power-supply controller generates logic-supply voltages in battery-powered systems. The RT8205A/B/C includes two pulse-width modulation (PWM) controllers fixed at 5V/3.3V or adjustable from 2V to 5.5V. An alternative LGATE1 output LG1_CP can be used for external charge pump (RT8205B). And an optional external charge pump can be monitored through SECFB (RT8205C). This device also features 2 linear regulators providing fixed 5V and 3.3V outputs. The linear regulator each provides up to 70mA output current with automatic linear-regulator bootstrapping to the PWM outputs. The RT8205A/B/C includes on-board power-up sequencing, the power-good output, internal soft-start, and internal soft-discharge output that prevents negative voltages on shutdown.<br />A constant on-time PWM control scheme operates without sense resistor and provides 100ns response to load transients while maintaining a relatively constant switching frequency. The unique ultrasonic mode maintains the switching frequency above 25kHz, which eliminates noise in audio applications. Other features include diode-emulation mode (DEM), which maximizes efficiency in light-load applications, and fixed-frequency PWM mode, which reduces RF interference in sensitive application</div>
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<li class="mv5"> Wide Input Voltage Range 6V to 25V<br /></li><li class="mv5"> Dual Fixed 5V/3.3V Outputs or Adjustable from 2V to 5.5V<font size="4">,</font> 1.5% Accuracy.<br /></li><li class="mv5"> Alternative LGATE1 Output (LG1_CP) acts as Clock for Charge Pump (RT8205B)<br /></li><li class="mv5"> Secondary Feedback Input Maintains Charge Pump Voltage (RT8205C)<br /></li><li class="mv5"> Fixed 3.3V and 5V LDO Output : 70mA<br /></li><li class="mv5"> 2V Reference Voltage±1% : 50mA<br /></li><li class="mv5"> Constant ON-Time Control with 100ns Load Step Response<br /></li><li class="mv5"> Frequency Selectable via TONSEL Setting<br /></li><li class="mv5"> R<sub>DS(ON)</sub> Current Sensing and Programmable Current Limit combined with Enable Control<br /></li><li class="mv5"> Selectable PWM<font size="4">,</font> DEM<font size="4">,</font> or Ultrasonic Mode<br /></li><li class="mv5"> Internal Soft-Start and Soft-Discharge<br /></li><li class="mv5"> High Efficiency up to 97%<br /></li><li class="mv5"> 5mW Quiescent Power Dissipation<br /></li><li class="mv5"> Thermal Shutdown<br /></li><li class="mv5"> RoHS Compliant and Halogen Free</li>
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<li class="mv5"> Notebook and Sub-Notebook Computers<br /></li><li class="mv5"> 3-Cell and 4-Cell Li+ Battery-Powered Devices </li>
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