PT7M7824TTAEX

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Power Management Integrated Circuit (PMIC) is a specialized device that is used in power supply design, power conditioning and control. As part of the system design, PMIC helps to regulate AC and DC inputs, control output current and voltages, and manage power consumption. An important PMIC product is the Supervisors, which consist of primarily small voltage detector, voltage regulators, watchdog timers, and reset logic devices. The supervisors are used to monitor and control precision circuitry during start up and in continuous production. The PT7M7824TTAEX is an example of a supervisor PMIC. It is a 2.5V voltage detector that accurately monitors and regulates power supply voltages in an IC, usually in source-driven applications. The device is available in conventional plastic packaging with a wide operating temperature range from -40°C to +125°C. It has a typical temperature coefficient of 25ppm/°C and a glitch prevention device to ensure noise immunity on its output signal for improved performance. The PT7M7824TTAEX application field includes a range of electronic products such as micro-controller based apparatus, mobile phone, portable audio & video player, wireless products, and battery-operated systems. It is suitable for production start-up and signal activation in a variety of applications such as a power-on reset, power supply sequence, signal switching, and warning device activation.Working Principle The PT7M7824TTAEX, powered with a nominal voltage of 2.5V, has a built-in comparator with internal sensitivity and hysteresis levels. The device\'s reference voltage, which is determined by an external resistor divider, sets the trip point of the regulator. When the input voltage reaches the preset value, the supervisor will respond with a go/no-go signal. With its small threshold level, the PT7M7824TTAEX has excellent regulation characteristics and low power consumption.The internal circuitry of the PT7M7824TTAEX has a 2-level detection range for protection against overvoltage and undervoltage conditions. When the input voltage rises over the preset voltage, the supervisor will activate the output signal as an indication of an overvoltage situation. The device will then shut off the load until the voltage resumes a normal operating level. On the other hand, When the input voltage falls below the preset value, the supervisor will shut off the load and generate a warning signal to alert personnel of the undervoltage. In addition, the PT7M7824TTAEX comes with a built-in watchdog timer, which allows for further protection against system start-up and sudden power disruptions. The watchdog timer is designed to monitor the system’s clock cycle in order to detect errors. If the system is not functioning correctly, the timer will reset or cause power interruption until the system returns to normal operation.The PT7M7824TTAEX also has power-on reset features that allow for a safer operation. First, the device starts up with a delay timer, rather than a quick reset signal. This eliminates the risk of overloading which may occur with a sudden reset signal. Furthermore, the power-on reset feature can prevent a malfunction due to the high impedance in IC testing or programmable devices.Overall, the PT7M7824TTAEX is designed to provide numerous protection functions to keep a system safe from overvoltage, undervoltage, and power disturbances. It is an effective and reliable component in preventing system errors and irregularities, and therefore ensures its operation whenever needed.

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