ADP2120ACPZ-3.3-R7

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The ADP2120ACPZ-3.3-R7 is a single-channel, constant frequency synchronous step-down DC-DC power supply controller and is typically used in a variety of applications such as digital displays, battery powered systems, and portable computing and communication devices. The device is capable of providing up to 3.3V output voltage from a 4.5V to 24V input voltage. This step down device features a 4V to 28V operating range and a low quiescent current of 8uA.

Application Field and Working Principle

The ADP2120ACPZ-3.3-R7 is a DC-DC switching regulator intended for general purpose applications. It is a synchronous, step-down voltage regulator that provides a constant output voltage from a variable input voltage and can be used for a variety of applications such as digital displays, battery powered systems, and portable computing and communication devices.

The device operates by taking an input voltage and regulating it to a desired output voltage. It does this by using two internal power switches that switch the input voltage in a way that adjusts the output voltage. As the input voltage changes, the device will adjust the duty cycle of the power switches accordingly to maintain the desired output voltage. The device can operate in either discontinuous or continuous conduction mode depending on the load condition, allowing it to be used in a wide range of applications.

The device features a synchronous rectification topology, which provides improved efficiency and reduced size compared to conventional step-down converters. Additionally, the device integrates a low drop-out voltage regulator, allowing it to maintain a stable output voltage even when the input voltage is low. The device can also be put into a low power shutdown mode, reducing the quiescent current to less than 4uA.

The ADP2120ACPZ-3.3-R7 has built-in protection features such as cycle-by-cycle current limit, over-temperature protection, UVLO, over-voltage protection, and integrated soft start. These built-in protection features allow the device to be used in a variety of applications with increased safety and reliability.

In summary, the ADP2120ACPZ-3.3-R7 is a DC-DC switching regulator designed for general purpose applications such as digital displays, battery powered systems, and portable computing and communication devices. It features a synchronous rectification topology, low drop-out voltage regulator, and integrated protection features, making it an ideal solution for a variety of applications.

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