AP7315D-12W5-7

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The AP7315D-12W5-7 is an A-grade, low-dropout linear three-terminal device that allows an input voltage of 12V to be regulated to a manageable and stable 5V output. With its low quiescent current of 6V, it is suitable for portable electronics, handheld devices, and power systems. It has a low noise figure, fast line and load transient response, and over current protection.

In terms of application fields, the AP7315D-12W5-7 is typically used in small-sized, portable and handheld audio and video devices such as cell phones, PDAs, MP3 players, and PDAs. They are also very useful for powering ICs and digital ICs in small electronic circuits. For example, it may be used to power 3.3V ICs, 5V digital ICs, or 12V power supply circuits. It can also be used as a voltage regulator for a camera or a digital television.

The main working principle of the AP7315D-12W5-7 is that of a linear three-terminal device. Its input voltage is 12V, and its output is controlled to a 5V output. It has a maximum output current of 500mA and is capable of regulating current up to 200mA. It has a quiescent current of 6V, a voltage regulation range of 0.8V to 15V, and a line regulation of 0.3%. It also features excellent surge protection and a low output noise level.

The AP7315D-12W5-7 is composed of a regulated power supply and a pair of precision voltage feedback resistors. In operation, the input voltage is applied to the regulated power supply, and the output voltage is adjusted using the voltage feedback resistors. As the output voltage is increased, the current in the feedback resistor increases, creating a feedback loop that keeps the output voltage at the desired level. The power supply acts as an amplifier, and the feedback resistor produces a stabilizing voltage, with the output voltage remaining at the desired level. The result is a clean, stable output voltage.

Another feature of the AP7315D-12W5-7 is its built-in thermal shutdown circuit. In the event of an over-temperature condition, the device enters a thermal shutdown state, reducing the current and voltage output until the device cools to a safe level. Additionally, it has an over-current protection circuit to protect the device from excessive current draw, as well as an over voltage protection circuit to prevent excessive voltage drop.

Overall, the AP7315D-12W5-7 is a lightweight and low-cost device that is suitable for a wide range of applications, including portable audio and video systems, electronic circuits, and digital televisions. Its low quiescent current reduces power consumption, while its over-temperature, over voltage, and current protection circuits provide optimum protection to the device from thermal or electrical over-stress. Its wide operating temperature range and fast response times are also beneficial in ensuring a reliable operation.

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