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The RT6310E/EH family are high efficiency synchronous step-down DC-DC converters with pseudo constant switching frequency 500kHz and deliver up to 10A output current. The RT6310E/EH operate from 4.5V to 23V input voltage. The output voltage of RT6310E/EH is fixed to 3.36V output voltage.</br></br>The RT6310E/EH adopts Advanced Constant On-Time (ACOT<SUP>&reg;</SUP>) control architecture that provides ultra-fast transient response and further reduces the external component count. In steady states, the ACOT<SUP>&reg;</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, RT6310E/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, RT6310E/EH provides the best light-load efficiency and improves the acoustic noise with spread spectrum function.</br></br>RT6310E/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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  • Input Voltage Range
    ► RT6310E/EH: 4.5V to 23V
  • Output Voltage
    ► RT6310E/EH: 3.36V
  • 10A Continuous Output Current
  • Stable with POSCAP and MLCC Capacitor
  • Fast Transient Response
  • Diode Emulation Mode (DEM) for Power Saving
  • Ultrasonic Mode (USM) for Avoiding Acoustic Noise
  • Pseudo Constant Switching Frequency 500kHz in CCM
  • Internal Power MOSFET Switch 17mΩ (high-side) and 7.5mΩ (low-side)
  • LDO
    ► RT6310E/EH: 3.3V/100mA
  • Overcurrent Limit
    ► RT6310E/EH: 15A
  • Output Under-/Overvoltage Protection (UVP/OVP)
    ► RT6310E: Latched Mode UVP/OVP
    ► RT6310EH: Hiccup Mode UVP and Non-Latched Mode OVP
  • Input Undervoltage-Lockout (UVLO)
  • Over-Temperature Protection (OTP)
    ► RT6310E: Latched Mode OTP
    ► RT6310EH: Non-Latched Mode OTP
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Laptop Computers<br>Tablet PCs<br>Networking Systems<br>Servers<br>Personal Video Recorders<br>Flat Panel Television and Monitors<br>Distributed Power Systems
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