ADM709MAR

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The ADM709MAR is a power management integrated circuit (PMIC) that can be used to provide superior protection against overtemperature conditions, voltage spikes, and other faults that may damage the system. It is a low voltage supervisor which can detect faults in the power supply and maintain power when needed. The ADM709MAR is a cost-effective, space-saving solution for protecting circuit boards and systems against over-temperature, over-voltage, and reverse polarity conditions.

The ADM709MAR is a low voltage supervisor that provides reliable power supply protection from over-temperature, over-voltage and reverse polarity conditions. The device monitors the system voltage and accurately trips before any damage to the power supply or system can occur. It triggers a circuit reset when the monitored voltage exceeds a pre-set level, thus reducing system costs by preventing component blowouts and simplifying system debugging. It is available in several different packages and is suitable for small size applications.

The ADM709MAR utilizes ultra-low leakage current, 65mV typical, to minimize power consumption and enable precision monitoring. It offers low operating voltage levels and high surge immunity. In addition, the ADM709MAR has a high level of integration, allowing its use in small-sized and highly space-constrained applications. It integrates several safety features including internal reset circuitry, watchdog timer, under voltage detector, and fail-safe sequence.

The ADM709MAR offers an open-drain reset output and a complementary TTL reset output. The open-drain reset output is active-low, providing the customer with a compatible output for triggering other system components. The TTL reset output is active-low and is used primarily for system-wide reset. The reset timeout on the TTL output is factory programmable for setting the timing of the reset pulse.

The ADM709MAR provides an alarm output with a threshold set by an internal voltage reference and an external voltage divider. The alarm output is an open-drain output with a hysteresis to provide a reliable detection of fault conditions. It features an adjustable threshold range of 0.15V to 10.0V and a low voltage condition window of 0.3V to 7.0V.

The ADM709MAR also includes an integrated temperature sensor that is used to detect the temperature and prevent overtemperature conditions. The device includes an overtemperature comparator, adjustable trip point, and open-drain output. The temperature trip point can be adjusted to a maximum of 135°C.

The ADM709MAR also includes a ESD protection circuitry that helps protect the system and other components from voltage surges. The device has a low operating current and supports both active low and active high reset and alarm outputs.

The ADM709MAR is an ideal choice for power management in embedded system, especially in applications requiring cost-effective, small-size, and reliable power management. It provides the customer with the necessary features to confidently protect the system from over-temperature, over-voltage, and reverse polarity conditions. It is suitable for board level, local power supply, and system monitoring applications and is available in several packages.

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