ADP150AUJZ-2.65-R7 Integrated Circuits (ICs)

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This article will discuss the application field and working principle of the ADP150AUJZ-2.65-R7, which falls under the PMIC - Voltage Regulators - Linear category.

The function of a linear voltage regulator is to take an input voltage, usually a DC voltage, and output a voltage whose magnitude is lower or higher than the original, although still DC with the same frequency. The ADP150AUJZ-2.65-R7 is a low-dropout (LDO) linear regulator with an adjustable voltage output of 2.65 volts and a low quiescent current of 10 µA. It is designed with low noise and low power dissipation, making it well-suited for applications requiring low energy consumption.

The device is typically used to provide needed power to small, low-power systems where a low-voltage constant output is required. Some typical applications include portable electronic devices, consumer products such as TVs, audio products, gaming systems, and other mobile products. It is also often used in industrial, automotive, and medical products.

The ADP150AUJZ-2.65-R7 operates on an input voltage range of 2.5 to 5.5 volts, has a maximum current of 1A and a thermal shutdown protection to prevent overheat damage. Its output voltage can be adjusted through applying an external voltage divider, which is often an external resistor divider, with a couple of resistors as divider elements.

The device works by setting a voltage reference that is usually 1.2 volts with a band gap voltage reference. This reference voltage is compared to the output voltage, and the difference forms a base current. This current passes through the pass circuit, which consists of an N-channel MOSFET switch and the current is then multiplied by the gain to create the output voltage. If the output voltage becomes too high, the regulation comparator changes the base current and the amount of current through the pass circuit is adjusted, thus maintaining the output voltage to the reference voltage.

The ADP150AUJZ-2.65-R7 also has an enable pin that allows the user to control the output voltage. This can be used to reduce power consumption when the voltage regulator is not in use. The device also provides overcurrent protection that is active when maximum rated current is exceeded. The device can also safely operate with unstable input voltages as long as the minimum and maximum limits are observed.

In conclusion, the ADP150AUJZ-2.65-R7 is a low-dropout (LDO) linear regulator with adjustable voltage output and low quiescent current. It is suitable for a wide variety of applications, such as portable electronic devices, consumer products, industrial, automotive, and medical products. The device operates on an input voltage range of 2.5 to 5.5 volts and has overcurrent protection; it includes an enable pin to reduce power consumption when the voltage regulator is not in use.

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