AN79L15

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The AN79L15 is a linear voltage regulator that is commonly used in a variety of applications. It is a low-dropout regulator, meaning that it can provide a regulated output voltage from an input voltage that is marginally higher than the desired output voltage. It provides excellent line and load regulation as well as current limiting and thermal protection for added safety and a very low quiescent current. As a result, the AN79L15 is suitable for applications where low quiescent current and high accuracy are important.

The AN79L15 use a three-terminal architecture that is often referred to as a “fly-back” regulator. The three terminals are referred to as the input (Vin), ground (Gnd), and the output (Vout). The Vin is the power source that supplies the input voltage to the regulator, while the Gnd provides the reference voltage for the circuit. The Vout is the regulated output voltage that is generated by the regulator. The AN79L15 is designed to generate a constant output voltage, regardless of input voltage and load conditions.

The AN79L15 can be used in a variety of applications such as low-power systems and portable electronics, where low power consumption and a low noise output voltage are important. It is also ideal for automotive applications such as automotive infotainment systems, body control modules, and engine control units, where accurate output regulation and a stable supply are critical. Additionally, the AN79L15 is commonly used in LED lighting systems and smart home applications where low power consumption and precise regulation are essential.

The working principle of the AN79L15 is based on a voltage-controlled current source and a negative feedback network. The voltage-controlled current source is responsible for controlling the output voltage based on a given input voltage. The negative feedback network works to maintain the output voltage at a predetermined level. This is done by comparing the output voltage to a reference voltage (also known as a feedback voltage) and then making adjustments by altering the voltage-controlled current source. If the output voltage is too high, the current source will be adjusted down to reduce the output voltage. Conversely, if the output voltage is too low, the current source will be increased to raise the output voltage.

The regulation loop of the AN79L15 is completed by the pass transistor, which acts as a switch to control the output voltage. When the output voltage needs to be increased, the pass transistor is switched off to allow current to flow from the input to the output. Conversely, when the output needs to be decreased, the pass transistor is switched on, preventing current from flowing from the input to the output. This allows the voltage-controlled current source to be adjusted to maintain the desired output voltage.

In order to ensure proper operation, the AN79L15 needs to be connected to a stable input voltage that is within its operating range. Additionally, the regulator needs to be well-ventilated in order to ensure proper cooling. Proper cooling is important for maintaining the regulator’s accuracy as well as prolonging its lifespan.

In summary, the AN79L15 is a linear voltage regulator that is commonly used in a variety of applications due to its low dropout voltage, low quiescent current, and excellent line and load regulation. It is based on a voltage-controlled current source with a negative feedback network and a pass transistor, which helps to maintain a constant and accurate output voltage. Furthermore, it requires a stable input voltage and adequate cooling in order to ensure proper operation.

The specific data is subject to PDF, and the above content is for reference