PT7M7809STEX

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PT7M7809STEX Application Field and Working Principle

A good power management IC (PMIC) is key in ensuring a system’s reliable, high-performance operations. This is why companies are always on the lookout for innovative PMIC components, such as the PT7M7809STEX PMIC. In this article, we discuss the application fields and working principles of this device.

PT7M7809STEX Power Management IC

The PT7M7809STEX is a voltage supervisor IC with open drain outputs. It is designed to switch off other ICs, transistors, or other electronic components when the available voltage is not within the required range. The device is a supervisor IC, and belongs to the PMIC - Supervisors family.

Activation And Output Voltage

The PT7M7809STEX has an activation voltage of 4.50V to 5.25V. When the applied voltage reaches this range, the built-in voltage monitor begins to sample the power line, and the internal comparator activates the user-controlled threshold (TH). The output low voltage activated by the user-defined TH ranges from 0.5V to 0.75V.

Power Up And Power Down

The PT7M7809STEX has a fast power-up characteristic, and it delivers a high output performance when the TH voltage is activated on power up. Apart from that, the device offers a maximum power down current of 3.2 μA and a maximum power down current of only 0.1 μA. When the power is down, the inputs to the device are forced to be in a low state, thus preventing possible misoperation of the device.

Application Fields

The PT7M7809STEX can be used in a wide range of applications. These include laptop computers, digital cameras, personal computers, industrial PC, server, portable devices, controller circuits, embedded systems, printer, display, and AC/DC line control equipment.

Features

The PT7M7809STEX offers many features which make it an attractive choice for power management applications. These features include:

• Low power consumption
• Fast activation and maximum power down currents
• Flexible threshold settings
• Compact package
• Simple power up/power down sequence
• High output performance
• High output-on voltage

Key Specifications

The PT7M7809STEX has some key specifications, which include the following:

• Supply Voltage, VCC: 4.5V to 5.5V
• Temperature Range: -55°C to +125°C
• Open Drain Output: Yes
• Operating Current Consumption: 3.1μA typ.
• Package: SOT363-5

Working Principle

The PT7M7809STEX works according to a simple principle. When the voltage at the VCC terminal falls below the TH voltage, the output voltage drops below 0.1V, ensuring that the power is shut off. The TH voltage is set by the user, and it ranges from 4.50V to 5.25V. The device is then able to detect the low and high voltages, and cut off power when the voltage exceeds the set thresholds. This ensures that the power-on and power-off operations are performed in a safe and reliable manner.

The PT7M7809STEX is also designed to be integrated into personal computer power supplies, servers, and other digital equipment. The device is designed to work with low voltages, and can sense when a system needs to be switched off or on. With its advanced features and robust performance, the PT7M7809STEX is an ideal option for managing power needs in various industries.

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