AP7343D-22W5-7

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AP7343D-22W5-7 is a voltage regulator in the linear series of power management integrated circuit (PMIC) regulators. It features buck and boost small current output, over-voltage protection, under-voltage protection, reverse current protection, short circuit protection, over-current protection, and load disconnection protection. In addition, it has wide input voltage range, low power consumption, and safety protections.

AP7343D-22W5-7 is a multi-functional integrated voltage regulator circuit widely used in industrial, communication, consumer electronic and consumer products. Its output voltage range is 4 to 22 volts, and it can provide approximate 5W of output power. Its current output can reach 500mA and its output ripple is small, which make it suitable for many high power applications.

The working principle of AP7343D-22W5-7 is based on an internally self-powered energy-saving switching regulator scheme. It uses several MOSFET-based switches and small output capacitors to provide its output current. As input voltage rises, the internal high-side power switch changes to low-side. The low-side switch then turns on and runs at its own peak current, while the high-side switch turns off until the input voltage drops to a certain point.

By combining the switch, the output capacitor and the feedback circuit together, AP7343D-22W5-7 can automatically adjust the output current to meet the load demand. The open-loop regulation control circuit output voltage is designed to maintain a constant voltage level even when the input voltage or the load current varies. In addition, the AP7343D-22W5-7 is also equipped with internal temperature protection, over-voltage protection, under-voltage protection, reverse current protection, short circuit protection, over-current protection, and load disconnection protection.

The main application of AP7343D-22W5-7 includes industrial automation equipment, mobile digital devices, medical devices, communication devices, and various digital products which require low power and reliable voltage supplies. Moreover, it can also be used in power supply applications such as set-top boxes, digital cameras, portable speakers, and battery-powered devices.

In summary, AP7343D-22W5-7 is a voltage regulator integrated circuit that combines switching, output capacitor and feedback circuit to automatically adjust the output current to meet the load demand. It can provide characteristics such as wide input voltage range, low power consumption, and safety protections. It is widely used in many industrial, communication and consumer electronic applications, and can be applied in many power supply applications such as set-top boxes, digital cameras, portable speakers and battery-powered devices.

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