NCP308SNADJT1G

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The NCP308SNADJT1G is an advanced automotive supervisor designed to protect microprocessors against power supply glitches and undervoltage events. It is a part of the growing portfolio of automotive supervisors from ON Semiconductor, helping automotive designers address a wide range of applications and improving system reliability. The NCP308SNADJT1G supervisor is ideal for automotive infotainment, communications, and driver-assistance applications.

When integrated within applications such as ABS, telematic units, or seat control modules, the NCP308SNADJT1G can be used to protect systems against undervoltage and power supply transients. It features an adjustable trip point from 0.8V–6V, an adjustable reset timer, and an active-high open-drain reset. In addition, it offers a supply voltage supervisor to ensure that the supply voltage is sufficient to maintain stability.

The device requires a minimum supply voltage of 0.8V to begin its operation. When the input voltage falls below the trip point, the NCP308SNADJT1G will immediately enter an active-low reset state and remain in this state until the voltage is stabilized such that it falls back into the range of the device (0.8V–6V). If a fault is detected in the power supply, the supervisor will remain in the active-low reset state until the fault is rectified or it is manually unlocked.

The NCP308SNADJT1G provides two outputs for critical control and signal monitoring functions. The reset output (RESET) is active-low and an active-high open-drain reset is provided for external pull-up or pull-down functionality. The active-high reset (nRESET) can be directly activated by the supervisor if allowed by the application and is open-drain for easy integration. Additionally, the NCP308SNADJT1G provides an enable output (EN) which is active-low and is provided to control the enable line during low VIN conditions.

The NCP308SNADJT1G supervisor is designed to work in harsh environments, with an operating temperature range of -40 °C to +105 °C and a power supply voltage range of 3V to 24V. Its wide input range and high operating temperature ensure that it can endure the high voltages and temperatures found in automotive applications. Additionally, the device has a low quiescent current of typically 20μA, making it suitable for low power applications.

The NCP308SNADJT1G supervisor offers superior protection and reliability for automotive applications, making it the ideal choice for automotive infotainment, communications, and driver-assistance applications. Its combination of adjustable trip points, adjustable reset timers, active-high reset and enable outputs, and wide supply voltage range make it a great choice for automotive designers looking to protect their systems against power supply glitches and undervoltage events.

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