Watchdog Timer

Watchdog Timer with Voltage Detector and Voltage Regulator

Product
Name
Operating
Voltage
Range
Voltage Detector Section Watchdog Timer Section Voltage Regulator Section Supply
Current
Package Data Sheet
(PDF)
Detector
Threshold
Range
Detector
Threshold
Accuracy
Output Delay Time*1 WDT Timeout Period*2 Inhibit
pin
Output
Voltage
Range
Output
Voltage
Accuracy
Output
Current
Min. Typ. Max. Min. Typ. Max. Typ. 
R5101G 1.5V to 10.0V 1.7V to 4.5V ±2.5% 7ms 14ms 35ms 50ms 120ms 250ms Y 1.8V to 5.0V ±2.5% 50mA 5µA SSOP-8G Download
R5110Sxx1A
R5110Sxx1B
*3
3.5V to 36.0V 1.6V to 5.0V ±1.8%*4 194ms 242ms 290ms 14.4ms 18ms 21.6ms N 1.8V to 5.0V ±1.5%*4 500mA 25µA HSOP-8E
HSOP-18
Download
2.32MB
R5110Sxx2C
R5110Sxx2D
*3
Y

* : Products partially available for applications under a high temperature environment. For details, please refer to each product page or High Temperature Products.

  • *1R5101G: CD = 0.001µF, R5110S: CD = 0.22µF
  • *2R5101G: CW = 0.01µF, R5110S: CTW = 0.01µF
  • *3Window Watchdog Timer
    Window watchdog timer monitors microprocessor activity and asserts a reset signal if the watchdog pulse does not occur witin the defined time window (open window) or if the watchdog pulse occurs within the defined time widown (close window).
  • *4Detector Threshold Accuracy in all temperature range.

Watchdog Timer with Voltage Detector

Product
Name
Operating
Voltage
Range
Voltage Detector Section Watchdog Timer Section Supply
Current
(Typ.)
Remarks Package Data Sheet
(PDF)
Detector
Threshold
Range
Detector
Threshold
Accuracy
Output
Delay Time
Accuracy
WDT Timeout
Period
Accuracy
Inhibit
pin
R5106N 0.9V to 6.0V 1.5V to 5.5V ±1.0% ±16% ±33% Y 11µA  CD Pin and CTW Pin are combined. SOT-23-6 Download Download*1
R5107G MR Pin is included. SSOP-8G Download
R5108G 1.5V to 6.0V SENSE Pin is included. Download
R5109G 0.9V to 6.0V 11.5µA 2 Clock Input Type Download

* : Products partially available for applications under a high temperature environment. For details, please refer to each product page or High Temperature Products.

  • *1This is the data sheet which combined R5106N, R5107G, R5108G and R5109G.

*

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  • *All PDF files are less than 1MB unless otherwise stated.
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Technical Info.

  • Application Note

    Technical Information on Ricoh Power Management ICs.

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  • Product Catalog

    Selection guide is available for download in PDF format.

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