For Consumer / IoT
The R8357 Series are CMOS-based system power ICs with a voltage detector (VD) and watchdog timer (WDT) integrated in a single chip.
R8357 monitors the power system of devices equipped with microprocessors and prevents system runaway with a reset signal when a malfunction occurs. The output delay time of the VD and watchdog timeout period/reset time can be adjusted by an external capacitor with a high degree of accuracy. The R8357 is equipped with the function that inhibits clock monitoring of the WDT (INH) and manual reset (MR) that also stops the VD.
Specs & Datasheets
|Input Voltage Range||0.9 V to 6.0 V (7.0 V)|
|Operating Temperature Range||-40°C to 125°C (150°C)|
|Supply Current||Typ. 11 µA|
|Timeout Period||Typ. 310 ms (CTW = 0.1 µF)|
|Timeout Period Accuracy||±33% (-40°C ≤ Ta ≤ 110°C)|
|Reset Time||Typ. 34 ms (CTW = 0.1 µF)|
|VD Detector Threshold Range||1.5 V to 5.5 V (0.1 V step)|
|VD Detector Threshold Accuracy||±1.0%|
|VD Detector Threshold Temperature Coefficient||Typ. ±100 ppm/°C (-40°C ≤ Ta ≤ 110°C)|
|VD Release Output Delay Time||Typ. 350 ms (CD = 0.1 µF)|
|VD Release Delay Time Accuracy||±16% (-40°C ≤ Ta ≤ 110°C)|
Quality & Packages
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Please contact us or our distributors for unpublished reliability information.
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