R5105 Series
Watchdog Timer with VD
R5105 Series
Watchdog Timer with VD
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Description
The R5105 Series are CMOS-based system power ICs with a voltage detector (VD) and watchdog timer (WDT) integrated in a single chip. R5105 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 high accuracy by an external capacitor.
Spec
| Automotive | |
|---|---|
| Input Voltage Range | 0.9 V to 6.0 V (7.0 V) |
| Operating Temperature Range | -40°C to 125°C (150°C) -40°C to 105°C (150°C) |
| Supply Current | Typ. 11 µA |
| Timeout Period | Typ. 310 ms (CTW = 0.1 µF) |
| Timeout Period Accuracy | ±33% |
| Reset Time | Typ. 34 ms (CTW = 0.1 µF) |
| Package | SOT-23-6 |
| VD Detector Threshold Range | 1.5 V to 5.5 V (0.1 step) |
| VD Detector Threshold Accuracy | ±1.0% |
| VD Detector Threshold Temperature Coefficient | Typ. ±100 ppm/°C |
| VD Release Output Delay Time | Typ. 370 ms (CD = 0.1 µF) |
| VD Release Delay Time Accuracy | ±16% (−40°C ≤ Ta ≤ 105°C) ±18% (−40°C ≤ Ta ≤ 125°C) |
Technical Documents
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Typical Application
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Timing Chart
* VTCD : Threshold voltage of CD pin when a power-on reset pulse inverting.
* Vref2H : CTW pin voltage at the end of WDT timeout period.
* Vref2L : CTW pin voltage at the begin of WDT timeout period.
* VDDL : 0.9 V (Max.)
Quality & Packages
- Refer to the datasheets for the details on the product.
- The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
FAQ
Buy / Contact
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Purchase, Request for samples and documentsSales are made through distributors. Please contact your local distributors for any sales-related inquiry such as price.
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Available from 1 piece!Our electronic device products are available through our authorized online distributors.
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Technical Support
R5105 Series