STM1818RWX7F Integrated Circuits (ICs)

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STM1818RWX7F is a supervisor IC, which is designed to provide system power-on reset functions and precision voltage detection regulation from a single device. This product is suitable for systems that require regulators and power reset functions, such as automotive electronic control systems. It is available in a small WSON6 package with a 3.3V to 11V operating voltage range.

The STM1818RWX7F provides system reset functions and voltage detection regulation to ensure system reliability, safety, and operating efficiency. It features a window watchdog timer that generates an external reset signal when the system fails. It also includes an adjustable two-channel comparator to detect power supply variations beyond the limits set by the user. The reset signal can be sent out as a low voltage or a low voltage reset pulse, depending on the setting. In addition, the device features an open-drain signal output (LVDR) and an overvoltage protect (OVP) signal output.

The STM1818RWX7F offers a high loop gain and excellent accuracy for detecting power supply variations. The internal loop gain is adjustable from 16 to 56 mV/V, which allows a wide output range from 200 mV to 850 mV. The accuracy of detecting voltage variations is better than ±2%.

The STM1818RWX7F consists of an adjustable two-level-detection circuit, an adjustable two-level-reset circuit, and an adjustable two-level-EN circuit. The circuit offers four adjustable detection voltage settings, with an adjustable low voltage reset pulse width, adjustable low voltage reset delay, adjustable VDE reset delay, and adjustable VDE reset pulse width. The voltage detection range of the STM1818RWX7F is from 0V up to 11V, with a typical response time of 160 ms (6V to 10V).

The STM1818RWX7F can be used in a variety of automotive electronic control systems, including engine control, airbag systems, powertrain control modules, transmission control systems, fuel control systems, and body control modules. It is also suitable for applications in battery monitor systems, UPS systems, and medical electronics.

In summary, the STM1818RWX7F is an ideal supervisor IC for automotive electronic control systems. It provides system reset functions and voltage detection regulation. It is available in a small WSON6 package with a 3.3V to 11V operating voltage range. It features a window watchdog timer to generate an external reset signal when the system fails, and an adjustable two-channel comparator to detect power supply variations beyond the limits set by the user. The reset signal can be sent out as a low voltage or a low voltage reset pulse, depending on the setting. The device also includes an open-drain signal output and an overvoltage protect signal output.

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