R5115 Series
Low Supply Current 42V Input System Power Supply with Window-type Watchdog Timer
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Description
The R5115 is a system power supply IC with an ultra-low power window-type watchdog timer (LDO + VD + WDT) that has an input voltage range of 3.5 V to 42 V. The R5115 offers a low current consumption of 8.5 µA at operation and 0.2 µA at standby. When ECU goes into sleep, the device automatically turns the built-in WDT off to prevent it from sending a reset signal. When ECU goes back to active, the device automatically turns the built-in WDT on to resume the ECU monitoring. The R5115 is also available with the version that is not equipped with an auto monitoring stop. The R5115 is equipped with a window-type watchdog timer that is capable of detecting errors not only caused by over-timing but also by short-timing.
Spec
| Standard | Industrial | Automotive | |
|---|---|---|---|
| Input Voltage Range | 3.5 V to 42.0 V (50.0 V) | ||
| Operating Temperature Range | -40°C to 105°C (125°C) | -40°C to 125°C (150°C) | -40°C to 125°C (150°C) |
| Supply Current | Typ. 8.5 µA | ||
| Standby Current | Typ. 0.2 µA | ||
| Open Window Time | Typ. 18 ms (CTW = 10 nF) | ||
| Closed Window Time | Typ. 4.5 ms (CTW = 10 nF) | ||
| Pulse Ignoring Time | Typ. 18 ms (CTW = 10 nF) | ||
| Timeout Period | Typ. 18 ms | ||
| Timeout Period Accuracy | -17.8% to 21.7% | ||
| Reset Time | Typ. 9 ms (CTW = 10 nF) | ||
| Package | HSOP-8E, HSOP-18, HQFN0808-28 | ||
| VD Detector Threshold Range | 2.5 V to 4.8 V | ||
| VD Detector Threshold Accuracy | ±1.6% | ||
| VD Release Output Delay Time | Typ. 220 ms (CD = 0.22 µF) | ||
| LDO Output Voltage Range | 3.3 V to 5.0 V | ||
| LDO Output Voltage Accuracy | ±1.6% | ||
| LDO Short-circuit Current Limit | Typ. 95 mA | ||
| LDO Output Current Limit | Typ. 440 mA | ||
| LDO Thermal Shutdown | Typ. 170°C | ||
Technical Documents
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SPICE model download
You can download the product's SPICE model. Login/registration to myNISD is required to download.
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R5115Sxx2C Typical Application
CIN = Ceramic 0.1 µF, COUT = Ceramic 0.1 µF
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R5115Sxx2C (Window type) Timing Chart
* tRESET : Release Delay Time
* tIGN : Ignoring Time
* tOW : Open Window Time
* tCW : Closed Window Time
* tWR : Reset Time
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| R5115Sxx1x-E2-FE |
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HSOP-8E | R5115Sxx1 | R5115Sxx1-FE |
| R5115Sxx2C-E2-FE |
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HSOP-18 | R5115Sxx2 | R5115Sxx2-FE |
| R5115Lxx2C-TR-FE |
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HQFN0808-28 | R5115L | R5115L-FE |
| R5115Sxx1x-E2-YE |
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HSOP-8E | R5115Sxx1 | R5115Sxx1-YE |
| R5115Sxx2C-E2-YE |
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HSOP-18 | R5115Sxx2 | R5115Sxx2-YE |
| R5115Lxx2C-TR-YE |
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HQFN0808-28 | R5115L | R5115L-YE |
| R5115Sxx1x-E2-KE |
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HSOP-8E | R5115Sxx1 | R5115Sxx1-KE |
| R5115Sxx1x-E2-AE |
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HSOP-8E | R5115Sxx1 | R5115Sxx1-AE |
| R5115Sxx2C-E2-KE |
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HSOP-18 | R5115Sxx2 | R5115Sxx2-KE |
| R5115Sxx2C-E2-AE |
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HSOP-18 | R5115Sxx2 | R5115Sxx2-AE |
| R5115Lxx2C-TR-KE |
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HQFN0808-28 | R5115L | R5115L-KE |
| R5115Lxx2C-TR-AE |
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HQFN0808-28 | R5115L | R5115L-AE |
- 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
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