AOZ1284PI-1

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The AOZ1284PI-1 is a DC DC Switching Regulator, which connects to a wide range of input voltages and outputs a regulated 5V or 3V3 output. This device is used in many applications such as industrial, telecom, datacom and home appliance power systems. As one of the few components that are necessary to complete a power supply design, it is increasingly used in signal conditioning, power management and direct power conversion. This article aims to give a brief overview of the AOZ1284PI-1 application field and working principle.

AOZ1284PI-1 Application Field

The AOZ1284PI-1 is an ideal choice for DC/DC applications that require a compact, efficient and reliable power supply. It offers a wide input voltage range (from 2V to 17V), and can be used to provide regulated 5V or 3V3 outputs with low output current ripple and high efficiency. It is widely used in industrial, telecom, datacom and home appliance power systems. In addition, it is also well suited for consumer electronic products such as smartphones, tablets, and TV set-top boxes.

The device offers an integrated high-side MOSFET and a low-side synchronous rectifier, which simplifies the layout of the circuit and reduces EMI compared to standard single-ended regulators. The AOZ1284PI-1 also is extremely efficient, with a maximum efficiency of 92% at 8V input. The device is optimized for low-noise operation, with a very low output ripple. This makes it an ideal choice for applications that require high sensitivity and low noise, such as medical devices and audio equipment.

AOZ1284PI-1 Working Principle

The AOZ1284PI-1 is a high-efficiency step-down DC/DC regulator that converts a DC input voltage into an adjustable output voltage. The device employs a synchronous rectification scheme to reduce switching losses, resulting in higher efficiency compared to linear regulators and conventional switching regulators. The device also includes an internal high-side MOSFET switch and a low-side synchronous rectifier, so the layout of the circuit is simplified.

The first step in the operation of the AOZ1284PI-1 is the rectification of the input AC voltage. The input AC voltage is converted into a DC voltage by a bridge rectifier circuit, and then it passes through an inductor in order to store energy. After the input voltage has been rectified and stored in the inductor, the device begins to deliver the stored energy to the output, thus providing the desired regulated output voltage.

In order to increase the efficiency of the AOZ1284PI-1, the circuit includes a synchronous rectification scheme. This technique uses a low-side MOSFET switch in conjunction with the high-side switch to reduce the switching losses of the device. When the output voltage is higher than the input voltage, the low-side switch can be used to reduce the voltage drop across the switch, thus increasing the efficiency of the device.

In order to further reduce the power consumption of the AOZ1284PI-1, the device incorporates an efficient stand-by mode. In this mode, the device is able to lower its quiescent current consumption to less than 5mA, thus reducing power consumption by up to 95%.

The AOZ1284PI-1 is also able to handle load current up to 2A without needing an additional heatsink, making it ideal for applications with limited space. In addition, the device is ESD-protected up to 8KV, making it resistant to electrostatic discharge damage.

Conclusion

The AOZ1284PI-1 is a high-efficiency DC/DC switching regulator, which can be used to convert DC input voltages into regulated 5V or 3V3 outputs. The device is characterized by wide input voltage range (from 2V to 17V), maximum efficiency of 92%, low output current ripple and ESD protection up to 8KV. The device is ideal for applications where high efficiency, low noise and low power consumption are required, such as industrial, telecom, datacom and home appliance power systems.

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