Nisshinbo Micro Devices Inc. R5115S121A-E2-KE

This device is a system power management IC integrating an ultra-low power consumption window watchdog timer, with an input voltage range of 3.5 V to 42 V. It incorporates a voltage regulator, a voltage detector, and a watchdog timer to supply power to the system, monitor supply voltage, and detect system faults. The device features [功能1], which allows the watchdog timer monitoring to be halted under light-load conditions. When the pulse signal period is too short or too long, the watchdog timer outputs a reset signal. The typical supply current is 8.5 µA, and protection functions including thermal shutdown, output current limiting, and short-circuit current limiting are provided. The regulator section offers an output voltage range of 3.3 V to 5.0 V, with ±1.6% accuracy over a temperature range of -40℃ ≤ Ta ≤ 125℃, and an output current of 250 mA. The voltage detector section features a detection voltage threshold range of 2.5 V to 4.8 V, with ±1.6% accuracy over a temperature range of -40℃ ≤ Ta ≤ 125℃. The watchdog timer section provides accuracy of -17.8% to 21.7% over a temperature range of -40℃ ≤ Ta ≤ 125℃. Available package options include HSOP-8E, HSOP-18, and HQFN0808-28.

• Microprocessor-based electronic equipment
• Electric vehicle inverters and charge controllers