AP7333-12SAG-7

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The AP7333-12SAG-7 is a low dropout (LDO) Linear Voltage Regulator from Diodes Inc. specifically designed for use in mobile applications, including cell phones, PDAs, and notebooks. It is a low quiescent current linear regulator that can accept up to 3A of input current. It has a wide input voltage range of 4V to 22V and an adjustable output voltage range of 1.2V to 19.8V. This makes it ideal for powering digital circuits that require a stable voltage.

The AP7333-12SAG-7 has several features that make it an ideal choice for use in mobile applications. It has a low quiescent current of only 15µA, which helps reduce overall power consumption. The device also has integrated protection features that protect it from damage due to overtemperature, overvoltage, and undervoltage. Additionally, the AP7333-12SAG-7 has a low output noise of only 45μV, making it quiet even when powering sensitive analog circuits.

The AP7333-12SAG-7 works by allowing a current to pass through it when the input voltage is higher than the output voltage plus the dropout voltage. The current is then reduced or limited by the value of the voltage error amplifier, which is set by a resistor tied to ground. The voltage error amplifier monitors the output voltage and adjusts it by switching on or off the current path in order to keep the output voltage stable.

The device is designed with a dual synchronization feature, which allows the AP7333-12SAG-7 to synchronize itself with an external system clock and reduce power consumption. This synchronization feature can be used to help reduce EMI ( electromagnetic interference) caused by the switching regulators found in mobile devices. The AP7333-12SAG-7 also has a unique mode for charging Li-ion batteries, which increases the battery life and reduces the workload of the main battery charging circuit.

The AP7333-12SAG-7 is a versatile and reliable solution for providing a stable voltage supply in mobile device applications. Its features make it an ideal choice for powering digital circuits, protecting against overtemperatures, overvoltage and undervoltage conditions, and reducing EMI. The Dual synchronization feature also helps extend the lifetime of Li-ion batteries. Overall, the AP7333-12SAG-7 is a great choice for providing reliable and efficient power supply in mobile applications.

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