AP7115-29SEG-7

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PMIC (Power Management IC) is a semiconductor device that is responsible for regulating and supplying power to many components in a wide variety of communication, consumer electronics, and computing applications. In particular, Voltage Regulators – Linear are used to regulate the levels of output - ensuring a smooth and steady power supply. An example of this type of voltage regulator is the AP7115-29SEG-7, which is a fixed and adjustable linear regulator providing high power density, accuracy and efficiency

Overview of AP7115-29SEG-7

The AP7115-29SEG-7 is a single output linear regulator designed for use in android phones and other portable devices, such as tablets and wearables. It is a fixed output voltage linear regulator operates from a single input voltage source up to 1.8V and delivers an output voltage of typically 0.8V to 1.8V. At the same time, it has high accuracy and low quiescent current. Furthermore, the device includes other features such as over-current protection and thermal protection.

The package of this linear regulator is a very small 9-pin, 2.0 mm×2.2mm SOP (Small Outline Package). The package is ideal for providing a low profile solution with superior thermal performance in order to save board space.

Applications of AP7115-29SEG-7

The AP7115-29SEG-7 is best suited for the power management of many power demanding applications such as smartphones, tablets and wearables, etc. Specifically, it can be used to provide regulated and efficient power for applications such as high brightness LED flashing modules, vibrators, real-time clocks, and other advanced logic circuits. In addition, it can also be used for LP configuration systems such as battery-powered handheld equipment and other systems with very limited space.

Working Principle of AP7115-29SEG-7

The AP7115-29SEG-7 is a low quiescent current linear regulator; this means it uses a linear regulator to regulate the input voltage rather than a switching regulator. The linear regulator is an integrated circuit that uses positive feedback to reduce the input voltage to the required output voltage while providing an output voltage that is well regulated and remarkably accurate.

The linear regulator consists of an operational amplifier that compares the output voltage with a reference voltage derived from an internal reference or an external reference voltage. The output voltage is limited to a certain value and this is achieved by controlling the current that flows into the load. When there is an excess of load current, the output voltage drops and this triggers the operational amplifier to reduce the current until the output voltage returns to its normal operating value.

The AP7115-29SEG-7 is equipped with other protection mechanisms such as overcurrent, over-temperature and overvoltage protection. The over-current protection ensures that the output current cannot surpass the current limit while the over-temperature protection prevents the device from over-heating by increasing the input voltage when the temperature exceeds a certain threshold value. The over-voltage protection feature eliminates the need for an external zener diode, thus providing a simpler and more efficient power solution.

Conclusion

In conclusion, the AP7115-29SEG-7 is a low quiescent current fixed and adjustable linear regulator designed for a wide variety of communication, consumer electronics, and computing applications. It is a small-sized 9-pin SOP package with high power density, accuracy and efficiency. The device is best suited for power demanding applications such as baseband peripherals, high brightness LED flashing modules, vibrators and real-time clocks. The regulator uses a linear regulator to regulate the input voltage, and includes protection features such as over-current, over-temperature and over-voltage protection.

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