NJM79L08UA

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NJM79L08UA voltage regulator is part of the linear family of voltage regulators, providing adjustable voltage range and current limit for a variety of applications. With limited power and accessible thermal characteristics, NJM79L08UA is an ideal active regulator for a variety of applications. This guide covers the application field and working principle of NJM79L08UA.

Application Field

NJM79L08UA is an adjustable regulator with a wide range, providing up to 80mA of peak current, 8V of voltage and adjustable precision current limit. It is suitable for a wide range of applications, including DC-DC converters, constant current drivers, media consoles, battery chargers and phones, as well as embedded systems, handheld devices and measurement tools. The adjustable precision current limit and controllable turn-on can protect the system from excessive current and surges while providing a more stable working environment. Its low noise and acceptable EMI performance also make it suitable for household and other noise-sensitive applications where fast response time is required. The excellent line and load regulation make it a great choice for an adjustable voltage source.

Working Principle

NJM79L08UA is an active voltage regulator which uses a voltage feedback loop and a power stage to control the voltage regulation output. The linear operation of this regulator is achieved by controlling the collector current of the output transistors according to the difference between the reference voltage and the output voltage. NJM79L08UA releases a constant voltage from its output which is regulated by the reference voltage, which is a fraction of the output voltage. This fraction determines the output voltage setting for the device. When the reference voltage is higher than the output voltage, the power transistor turns on, driving the output voltage higher. When the reference voltage is less than the output voltage, the power transistor turns off, reducing the output voltage.

The adjustable precision current limit on NJM79L08UA allows the user to set a maximum allowable current value which, when exceeded, will hold the current in the power transistor at the maximum and also shutdown the device. This feature can protect the device from being overloaded. With adjustable over temperature protection, NJM79L08UA can also withstand high temperature conditions.

NJM79L08UA is a reliable, cost-effective and easy-to-use adjustable voltage regulator, providing adjustable voltage range and current limit for a wide range of applications. With its adjustable precision current limit, thermal performance and low noise, NJM79L08UA is an ideal regulator for a variety of applications where reliable operation is required.

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