ADP124ARHZ-2.9-R7

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ADP124ARHZ-2.9-R7 is a linear voltage regulator in Power Management Integrated Circuits (PMIC) category that integrates current regulator and voltage regulator features. It offers the customer desirable features such as fast transient response, low power dissipation, a low drop-out architecture, and an analog set-up. This voltage regulator can deliver output currents up to 180mA and output voltages up to 2.9V.

In terms of its applications, the device finds its use across a range of fields such as consumer electronics, automotive, telecom and industrial sectors. It is used in devices such as audio amplifiers, CD retreads and DVD players, power converters, sensors, DSL modems and set-top boxes. Its low drop-out architecture and other features make it suitable for use in audio power supply and other areas where precise voltage and current measurements are required.

The working principle of the device revolves around a loop consisting of a comparator, an error amplifier, a voltage reference and a P-channel MOSFET as shown in the schematic. This loop compares the output voltage with the setpoint voltage and amplifies the error, resulting in current driving the P-channel MOSFET to achieve the desired output voltage. The thermal shutdown feature prevents the device from overheating.

The device also incorporates a low drop-out current regulator, which ensures that the output voltage is maintained even when the supply voltage is dropped. This feature makes the device suitable for applications such as portable electronic devices, where a low supply voltage is required. Additionally, the device features a shutdown pin, which can be used to turn off all the regulators within the device when needed.

In conclusion, the ADP124ARHZ-2.9-R7 is a versatile linear voltage regulator suitable for numerous applications in the consumer electronics, automotive, telecom and industrial sectors. It provides great features such as low drop-out architecture, fast transient response, low power dissipation, and an analog set-up, making it suitable for a wide range of applications. Additionally, its thermal shutdown feature ensures that it does not overheat and is able to maintain the output voltage even with a low supply voltage.

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