R5106N SERIES
AEC-Q100 Compliant
Microprocessor Supervisory Circuit with Inhibit pin for Automotive Applications
NO. EC-169-180222
OUTLINE
The R5106N is a microprocessor supervisory circuit and has high accuracy and ultra low supply current voltage
detector with built-in delay circuit and watchdog timer. When the supply voltage is down across the threshold,
or the watchdog timer does not detect the system clock from the microprocessor, the reset output is generated.
The voltage detector circuit is used for the system reset, etc. The detector threshold is fixed internally, and the
accuracy is ±1.0%. The released delay time (Power-on Reset Delay) circuit is built-in, and output delay time is
adjustable with an external capacitor, and the accuracy is ±16% (R5106Nxx1x-TR-JE: −40°C ≤ Ta ≤ 105°C)(1).
When the supply voltage becomes higher than the released voltage, the reset state will be maintained during
the delay time. The output type of the reset is selectable, Nch open-drain, or CMOS.
The time out period of the watchdog timer can be also set with an external capacitor, and the accuracy is
±33%(1). There is a function to stop supervising clock by the watchdog timer (INH function).
The package of R5106N is SOT-23-6.
FEATURES
• Supply Current (ISS)....................................................... Typ. 11µA
• Operating Voltage Range (VDD)..................................... 0.9V to 6.0V
< Voltage Detector Part >
• Detector Threshold Range............................................ 1.5V to 5.5V (0.1V steps)
• Detector Threshold Accuracy........................................ ±1.0%
• Detector Threshold Temperature Coefficient ................ Typ. ±100 ppm/°C
R5106Nxx1x-TR-AE: −40°C ≤ Ta ≤ 125°C
R5106Nxx1x-TR-JE: −40°C ≤ Ta ≤ 105°C
• Power-on Reset Delay Time accuracy(1)....................... ±18% (R5106Nxx1x-TR-AE: −40°C ≤ Ta ≤ 125°C)
±16% (R5106Nxx1x-TR-JE: −40°C ≤ Ta ≤ 105°C)
• Power-on reset delay time of the voltage detector ....... Typ. 370ms with an external capacitor : 0.1µF
< Watchdog Timer Part >
• Built-in a watchdog timer's time out period accuracy(1). ±33%
R5106Nxx1x-TR-AE: −40°C ≤ Ta ≤ 125°C
R5106Nxx1x-TR-JE: −40°C ≤ Ta ≤ 105°C
• Timeout period for watchdog timer ............................... Typ. 310ms with an external capacitor : 0.1µF
• Reset timer for watchdog timer..................................... Typ. 34ms with an external capacitor : 0.1µF
• With Inhibit pin (INH)..................................................... Able to stop watchdog timer
• Package ........................................................................ SOT-23-6
APPLICATIONS
• Voltage monitoring for electronic control units such as EV inverter and battery charge control unit.
(1) Accuracy to center value of (Min.+Max.)/2
1