R5110 Series
36V Input System Power Supply with Watchdog Timer

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  • Description

    R5110 Series are the system power supply and supervisor IC based on the high-voltage CMOS process technology, and have high accuracy and ultra low supply current voltage.

    R5110 consists of a regulator (VR), a voltage detector (VD), and a normal/ window type of watchdog timer (WDT) in a chip, and can provide three functions of the system power supply, the supply voltage supervisor, and the supervision of system’s misoperation.

    R5110 supports the packages of HSOP-8E, HSOP-18 and HQFN0808-28.

  • Spec
    Consumer Automotive
    Input Voltage Range 3.5 V to 36.0 V (50.0 V)
    Operating Temperature Range -40°C to 105°C (125°C) -40°C to 125°C (150°C)
    Supply Current Typ. 25 µA
    Standby Current Typ. 0.2 µA
    Open Window Time Typ. 18 ms (CTW = 10 nF)
    Closed Window Time Typ. 18 ms (CTW = 10 nF)
    Pulse Ignoring Time Typ. 18 ms (CTW = 10 nF)
    Timeout Period Typ. 18 ms (CTW = 10 nF)
    Timeout Period Accuracy ±20%
    Reset Time Typ. 9.5 ms (CTW = 10 nF)
    Package HSOP-8E, HSOP-18, HQFN0808-28
    VD Detector Threshold Range 1.6V to 5.5V
    VD Detector Threshold Accuracy ±1.8%
    VD Release Output Delay Time Typ. 242 ms (CD = 0.22 µF)
    LDO Output Voltage Range 1.8 V to 5.0 V
    LDO Output Voltage Accuracy ±1.5%
    LDO Short-circuit Current Limit Typ. 80 mA
    LDO Output Current Limit Min. 500 mA
    LDO Thermal Shutdown Typ.165°C
    VD Release Delay Time Accuracy ±20%
  • Technical
    • R5110Sxx2C/2D Typical Application

      R5110Sxx2C/2D Typical Application

      C1 = Ceramic 0.1 µF, C2 = Ceramic 0.1 µF

    • R5110Sxx2D (Window type) Timing Chart

      R5110Sxx2D (Window type) Timing Chart

      * TWVREFH : TW pin voltage at the end of WDT timeout period
      * TWVREFL : TW pin voltage at the begin of WDT timeout period
      * tdelay : Release Delay Time
      * tIGN : Ignoring Time
      * tOWL : Long Term Open Window Time
      * tCW : Closed Window Time
      * tOW : Open Window Time
      * tWR : Reset Time

  • Quality &
    • Refer to the datasheets for the details on the product.
    • The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
    • Please contact us or our distributors for unpublished reliability information.

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Functional Description

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Category:Watchdog Timers

Features Window WDT,+VD,+LDO,MR pin,SENSE pin
min (V)
max (V)