NJM78L08A

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NJM78L08A is a linear voltage regulator integrated circuit designed to provide very low drop positive outputs of up to 8V with a typical quiescent current per channel of 3.5mA, making it ideal for battery-powered applications. It can be used in combination with a low-drop linear regulator, as well as with high-current switching regulators, to provide low-dropout, highly-regulated multiple rail supplies required by some applications. By constructing simple voltage divider circuits, the NJM78L08A can also be utilized as a low-dropout and inexpensive adjustable voltage regulator.

The NJM78L08A is powered by an input voltage of 10V to 18V and it is capable of providing up to 500mA of output current, which makes it suitable for a wide range of applications. Its low power dissipation helps to keep system cost down, while its low quiescent current is ideal for applications sensitive to power consumption. In addition, it is small in size and has a built-in over-current protection. Furthermore, the device is constructed with a thermal-shutdown protection and a reverse-battery protection.

The NJM78L08A is composed of three main circuit elements, namely a PNP-based error amplifier, a low-drop P-channel MOSFET, and an output voltage divider. The error amplifier is used to compare the output voltage with a reference voltage, which determines the output voltage. When the output voltage deviates from the reference voltage, it is then adjusted, ensuring that the output voltage will remain stable. The P-channel MOSFET is used to regulate the current flow, while the output voltage divider divides the output voltage, allowing the voltage to be adjusted externally.

The NJM78L08A is widely applicable in places where relatively low power consumption is needed, such as in audio playback devices, toys and portable music players. It can also be used in computers, video gaming consoles, laptop computers, and other low-power applications. Additionally, it can be used in applications that require a clean, stable DC output, such as in automotive, industrial, and medical applications.

In summary, the NJM78L08A is a low-drop linear positive voltage regulator capable of providing regulated 8V outputs with a quiescent current per channel of 3.5mA. It is ideal for battery-powered applications and it can be used in combination with either a low-drop linear regulator or a high-current switching regulator. Furthermore, it is widely applicable in low-power applications, where battery conservation is of concern, such as in audio playback devices, toys, laptop computers, and portable music players. Finally, it is well-suited for automotive, industrial, and medical applications where stable DC outputs are required.

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