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R5115 Series
Low Supply Current 42V Input System Power Supply with Window-type Watchdog Timer
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.
Download Datasheet
Specs & Datasheets
| Consumer | 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
R5115Sxx2C Typical Application
CIN = Ceramic 0.1 µF, COUT = Ceramic 0.1 µF
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 |
|
HSOP-8E | R5115Sxx1 | R5115Sxx1-FE |
| R5115Sxx2C-E2-FE |
|
HSOP-18 | R5115Sxx2 | R5115Sxx2-FE |
| R5115Lxx2C-TR-FE |
|
HQFN0808-28 | R5115L | R5115Lxx2-FE |
| R5115Sxx1x-E2-YE |
|
HSOP-8E | R5115Sxx1 | R5115Sxx1-YE |
| R5115Sxx2C-E2-YE |
|
HSOP-18 | R5115Sxx2 | R5115Sxx2-YE |
| R5115Lxx2C-TR-YE |
|
HQFN0808-28 | R5115L | R5115Lxx2-YE |
| R5115Sxx1x-E2-KE |
|
HSOP-8E | R5115Sxx1 | R5115Sxx1-KE |
| R5115Sxx1x-E2-AE |
|
HSOP-8E | R5115Sxx1 | R5115Sxx1-AE |
| R5115Sxx2C-E2-KE |
|
HSOP-18 | R5115Sxx2 | R5115Sxx2-KE |
| R5115Sxx2C-E2-AE |
|
HSOP-18 | R5115Sxx2 | R5115Sxx2-AE |
| R5115Lxx2C-TR-KE |
|
HQFN0808-28 | R5115L | R5115Lxx2-KE |
| R5115Lxx2C-TR-AE |
|
HQFN0808-28 | R5115L | R5115Lxx2-AE |
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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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