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The RT6338E/EH family are high efficiency synchronous step-down DC-DC converters with pseudo constant switching frequency 500kHz and deliver up to 8A output current. The RT6338E/EH operate from 4.5V to 23V input voltage. The output voltage of RT6338E/EH is fixed to 3.36V output voltage.<br /><br />The RT6338E/EH adopts Advanced Constant On-Time (ACOT<sup>®</sup>) control architecture that provides ultra-fast transient response and further reduces the external component count. In steady states, the ACOT<sup>®</sup> operates at nearly constant switching frequency over line, load and output voltage ranges and makes the EMI filter design easier.<br /><br />By setting the voltage of the EN/MODE pin, RT6338E/EH operates either in diode emulation mode (DEM) or ultrasonic mode (USM) at light load. The USM maintains operation frequency above 25kHz, which eliminates the acoustic noise. In the DEM, RT6338E/EH provides the best light-load efficiency and improves the acoustic noise with spread spectrum function.<br /><br />RT6338E/EH provides PGOOD indicator for easy system sequence control. Full protection features are also integrated in the device, including the cycle-by-cycle current limit, OVP, UVP, input UVLO and OTP.<br /><br />All above functions are integrated in a UQFN-23L 3x3 (FC) package.
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<li class="mv5"> Input Voltage Range<br /> ► RT6338E/EH: 4.5V to 23V<br /> </li><li class="mv5"> Output Voltage<br /> ► RT6338E/EH: 3.36V<br /> </li><li class="mv5"> 8A Continuous Output Current<br /> </li><li class="mv5"> Stable with POSCAP and MLCC Capacitor<br /> </li><li class="mv5"> Fast Transient Response<br /> </li><li class="mv5"> Diode Emulation Mode (DEM) for Power Saving<br /> </li><li class="mv5"> Ultrasonic Mode (USM) for Avoiding Acoustic Noise<br /> </li><li class="mv5"> Pseudo Constant Switching Frequency 500kHz in CCM<br /> </li><li class="mv5"> Internal Power MOSFET Switch 26mΩ (high-side) and 14mΩ (low-side)<br /> </li><li class="mv5"> LDO<br /> ► RT6338E/EH: 3.3V/100mA<br /> </li><li class="mv5"> Overcurrent Limit<br /> ► RT6338E/EH: 12A<br /> </li><li class="mv5"> Output Under-/Overvoltage Protection (UVP/OVP)<br /> ► RT6338E: Latched Mode UVP/OVP<br /> ► RT6338EH: Hiccup Mode UVP and Non-Latched Mode OVP<br /> </li><li class="mv5"> Input Undervoltage Lockout (UVLO)<br /> </li><li class="mv5"> Over-Temperature Protection (OTP)<br /> ► RT6338E: Latched Mode OTP<br /> ► RT6338EH: Non-Latched Mode OTP</li>
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<li class="mv5"> Laptop Computers<br /> </li><li class="mv5"> Tablet PCs<br /> </li><li class="mv5"> Networking Systems<br /> </li><li class="mv5"> Servers<br /> </li><li class="mv5"> Personal Video Recorders<br /> </li><li class="mv5"> Flat Panel Television and Monitors<br /> </li><li class="mv5"> Distributed Power Systems</li>
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