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The RT7241A provides a complete power supply for DDR3/DDR3L/LPDDR3/DDR4 memory systems. It integrates an Advanced Constant On-Time (ACOT<sup>TM</sup>) mode synchronous Buck converter with a 1.5A sink/source tracking linear regulator. <p align="justify">The PWM converter provides low quiescent supply current, high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high-voltage batteries to generate low-voltage chipset RAM supplies in notebook computers. The ACOT<sup>TM</sup> control scheme handles wide input/output voltage ratios with ease and provides a very fast response to load transients with no external compensators. </p><p align="justify">The 1.5A sink/source VTT LDO maintains fast transient response only requiring 10μF ceramic output capacitance. The RT7241A supports all of the sleep state controls placing VTT at high-Z in S3 and discharging VDDQ and VTT in S4/S5. </p><p align="justify">The RT7241A provides complete protection features including OCP, OVP, UVP, and thermal shutdown. The RT7241A is available in the UQFN-18L 3x4 package.</p>
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<li class="mv5"> DDR3/DDR3L/LPDDR3/DDR4 Complete Solution <br /></li><li class="mv5"> PWM Converter (VDDQ) <br />► 100μA Low Quiescent Supply Current at S3 Mode <br />► ACOT<sup>TM</sup> Mode Performs Fast Transient Response<br />► Support MLCC Output Capacitors <br />► Integrated Low On-Resistance MOSFETs <br /></li><li class="mv5"> 17mΩ of High-Side MOSFET<br /></li><li class="mv5"> 4.5mΩ of Low-Side MOSFET<br />► Adjustable from 0.6V to 1.5V Output Range for 1.5V (DDR3), 1.35V (DDR3L), 1.2V (LPDDR3) and 1.2V (DDR4)<br />► 4.5V to 23V Battery Input Range<br />► 500kHz Switching Frequency <br />► Resistor Adjustable Valley Current Limit<br />► Over-/Under-Voltage Protection<br />► Internal Voltage Ramp Soft-Start<br />► Power Good Indicator<br /></li><li class="mv5"> 1.5A LDO (VTT)<br />► Capable to Sink and Source up to 1.5A<br />► LDO Input Available to Optimize Power Losses<br />► Require Only 10μF Ceramic Output Capacitor<br />► Integrated Divider Tracks 1/2 VDDQ for VTT<br />► Accuracy ±20mV for VTT<br />► Support High-Z in S3 and Soft-Off in S4/S5<br /></li><li class="mv5"> Tracking Mode Discharge Control<br /></li><li class="mv5"> Thermal Capable Flip-chip (FC) Package for 12A VDDQ Converter and 1.5A VTT LDO<br /></li><li class="mv5"> RoHS Compliant and Halogen Free</li>
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<li class="mv5"> DDR3/DDR3L/LPDDR3/DDR4 Memory Power Supplies<br /></li><li class="mv5"> Notebook computers</li>
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