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RT6310E/RT6310EH

10A, 23V Synchronous Step-Down Converter with 3.3V LDO

RT6310E/RT6310EH
New

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.

The RT6310E/EH adopts Advanced Constant On-Time (ACOT®) control architecture that provides ultra-fast transient response and further reduces the external component count. In steady states, the ACOT® operates at nearly constant switching frequency over line, load and output voltage ranges and makes the EMI filter design easier.

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.

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.

All above functions are integrated in a UQFN-23L 3x3 (FC) package.

應用

  • Laptop Computers
  • Tablet PCs
  • Networking Systems
  • Servers
  • Personal Video Recorders
  • Flat Panel Television and Monitors
  • Distributed Power Systems

主要規格

RT6310E RT6310EH
Status Active Active
Vin (min) (V) 4.5 4.5
Vin (max) (V) 23 23
Number of Outputs 1 1
Vout (min) (V) 3.326 3.326
Vout (max) (V) 3.394 3.394
Output Adj. Method Fixed Fixed
Iout (max) (A) 10 10
Current Limit (typ) (A) 15 15
Freq (typ) (kHz) 500 500
Ext Sync No No
Ron_HS (typ) (mOhm) 17 17
Ron_LS (typ) (mOhm) 7.5 7.5
Iq (typ) (mA) 0.095 0.095
Features ACOT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Internal Compensation;OCP;OTP;OVP;PSM;Power Good;Stable with Ceramic Capacitor;UVP;Ultrasonic Mode Control ACOT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Internal Compensation;OCP;OTP;OVP;PSM;Power Good;Stable with Ceramic Capacitor;UVP;Ultrasonic Mode Control
Package Type UQFN3x3-23(FC) UQFN3x3-23(FC)

關鍵特性

  • 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

Datasheet

DS6310E_EH-00.pdf

Datasheet

DS6310E_EH-00.pdf

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