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R5111 Series

36V Input System Power Supply with Watchdog Timer

  • Industrial
  • Automotive
  • PLP
  • AEC-Q100
  • RoHS

R5111 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.

R5111 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.

R5111 supports the packages of HSOP-8E, HSOP-18 and HQFN0808-28.

Specs & Datasheets

  Industrial 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. 110 mA
LDO Output Current Limit Min. 300 mA
LDO Thermal Shutdown Typ.165°C
VD Release Delay Time Accuracy ±20%

Download Datasheet

Technical Documents

R5111Sxx2C/2D Typical Application

R5111Sxx2C/2D Typical Application

C1 = Ceramic 0.1 µF, C2 = Ceramic 0.1 µF

R5111Sxx2D (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 & Packages

Product Name Compatibility Package Marking Reliability
  • gradeIndustrialI
  • plpP
HSOP-8E R5111Sxx1 R5111Sxx1-YE
  • gradeIndustrialI
  • plpP
HSOP-18 R5111Sxx2 R5111Sxx2-YE
  • gradeIndustrialI
  • plpP
HQFN0808-28 R5111L R5111L-YE
  • gradeAutomotiveA
  • aecQ1001
  • plpP
HSOP-8E R5111Sxx1 R5111Sxx1-KE
  • gradeAutomotiveA
  • aecQ1001
  • plpP
HSOP-8E R5111Sxx1 R5111Sxx1-AE
  • gradeAutomotiveA
  • aecQ1001
  • plpP
HSOP-18 R5111Sxx2 R5111Sxx2-KE
  • gradeAutomotiveA
  • aecQ1001
  • plpP
HSOP-18 R5111Sxx2 R5111Sxx2-AE
  • gradeAutomotiveA
  • aecQ1001
  • plpP
HQFN0808-28 R5111L R5111L-KE
  • gradeAutomotiveA
  • aecQ1001
  • plpP
HQFN0808-28 R5111L R5111L-AE

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.

Sample / Buy

Functional Description

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Category:Watchdog Timers

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