AOZ1232QI-01 Integrated Circuits (ICs)

Voltage - Input (Max):	28V
Supplier Device Package:	30-QFN (5x5)
Package / Case:	30-VFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	100kHz ~ 1MHz
Current - Output:	6A
Voltage - Output (Max):	23.8V
Voltage - Output (Min/Fixed):	0.8V
Series:	EZBuck™
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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AOZ1232QI-01 Application Field and Working Principle

PMIC - Voltage Regulators - DC DC Switching Regulators

The AOZ1232QI-01 is an advanced PMIC (Power Management IC) designed for efficient DC-DC voltage regulation. With a wide range of integrated protection circuits and high-accuracy reference voltage setting, the AOZ1232QI-01 is the ideal choice for a wide range of power applications. This article will discuss the various application fields and the working principle of the AOZ1232QI-01.

Application Field of the AOZ1232QI-01

The AOZ1232QI-01 is mainly used for providing regulated direct current over a wide range of operating cases to systems that require more precise power management such as wireless communication, high-speed data processing, medical equipment and automotive markets.For the wireless communication segment, the AOZ1232QI-01 is used for the power management of external devices such as filters, power amplifiers, and frequency synthesizers. The precision voltage regulation over all operating conditions makes the AOZ1232QI-01 the ideal solution for high-performance and reliable power management. In addition, the AOZ1232QI-01 has a wide range of thermal protection features which make it suitable for automotive applications.For the medical segment, the AOZ1232QI-01 is used for medical diagnostic and imaging equipment. With its high-performance voltage regulation and low noise output, the AOZ1232QI-01 ensures reliable power delivery for system operations.

Working Principle of the AOZ1232QI-01

The AOZ1232QI-01 is a DC-DC linear regulator and switching regulator which consists of a combination of a linear regulator and a DC-DC converter. The linear regulator and the DC-DC converter are driven by an error amplifier, which controls the output and keeps the output voltage at the desired level. The linear regulator portion of the AOZ1232QI-01 can efficiently provide voltage regulation by dissipating the excess energy as heat. The linear regulator consists of two transistors and two resistors, where the two transistors act as the input transistor (PNP) and the output transistor (NPN). The input transistor acts as a controllable switch, while the output transistor provides the linear regulation function. The two resistors are connected between the gate of the output transistor and ground, as well as between the gate of the input transistor and the base of the output transistor.The DC-DC converter portion of the AOZ1232QI-01 provides a more efficient voltage regulation since it does not need to dissipate excess energy as heat. The DC-DC converter is made up of two transistors and two resistors, where the two transistors form the high-side switch (PMOS) and the low-side switch (NMOS). The high-side switch is connected between the output pin and ground, while the low-side switch is connected between the output pin and the input pin. The two resistors are connected between the gates of the two transistors.When the error amplifier detects a current difference between its two inputs, it adjusts the voltage at the output to the desired level by controlling the current flow through the input transistor. When the output voltage needs to be increased, the error amplifier will increase the current to the output transistor, effectively increasing the voltage at the output. When the output voltage needs to be decreased, the error amplifier will decrease the current to the output transistor, reducing the voltage at the output. If the current difference between the two inputs of the error amplifier is zero, then the voltage at the output is held at a constant level.The combination of the linear regulator and the DC-DC converter allows the AOZ1232QI-01 to provide high accuracy output regulation over a wide range of operating conditions. The AOZ1232QI-01 also features over-voltage protection, over-current protection, thermal protection, and short-circuit protection features to ensure reliability and safety. In conclusion, the AOZ1232QI-01 is an advanced PMIC with a combination of a linear regulator and a DC-DC converter that provides high accuracy voltage regulation over different application fields. With its wide range of protection circuits and advanced circuit designs, the AOZ1232QI-01 is ideal for a variety of power management applications.

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