L79L15ACD

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PMIC (Power Management Integrated Circuits) provide an integrated solution to optimizing power-level understanding with voltage regulators. In particular, linear voltage regulators are optimized for efficiency and long-term system stability. They achieve this by providing a constant output from a variable input. The L79L15ACD is a relevant example of a voltage regulator which can provide a stable output from variations in the power source. This article will explore the L79L15ACD’s application field and working principle.

The L79L15ACD is a three-terminal negative voltage regulator - a component that produces a constant voltage from a varying input voltage. Its output is -15V, which makes it well-suited to battery-powered electronics and automotive equipment. It is also a TO-92-style component, meaning it has a layout that is compatible with most prototyping boards, maximizing versatility when being used in an application. It has a maximum output current of 800mA, meaning it is capable of delivering enough power to power components with a power consumption of 800mA or less. Its input range is from -20 V to -40 VDS, meaning it can be used in a variety of applications with a wide range of power sources.

It is also a great option for a variety of applications in the communications, consumer electronics and office automation fields. This is because it offers low-power consumption, high-stability operation, and low-cost. The small size of the component also allows it to be used in space constrained applications, and its high surge current capability enables it to handle sudden current spikes that may occur during power on/off periods.

Furthermore, the L79L15ACD has internal short-circuit and over-temperature protection. The short-circuit protection will shut down the current when it reaches an unsafe level, preventing damage to the component. The over-temperature protection will also shut down the current when the component gets too hot, preventing damage from thermal runaway.

Now that we know the applications and features of the L79L15ACD, let’s look at how it works. The L79L15ACD is an adjustable voltage regulator and works using a three-terminal system consisting of input, output, and adjust pins. The regulator uses feedback from the output voltage pin to adjust the current that flows from the input to the output. This allows the output voltage to remain constant despite changes in the input voltage.

Additionally, the regulator uses a voltage reference terminal (adjust pin) to control the output voltage. This voltage reference terminal is the point of connection between the input and output voltage, and it is used to set the output voltage. The regulator needs a certain amount of current to flow through the regulator to operate. This current is regulated within the component and is called the quiescent current (IQ). The amount of IQ current needed by the regulator is dependent on the output voltage and the type of load it is driving.

This regulator also uses an internal error amplifier, which monitors the actual output voltage from the set voltage and produces a voltage error signal. This error signal is then amplified and drives the pass transistor, which controls the current flowing from the input, to the output. The output voltage is thereby kept at the desired reference voltage.

Overall, the L79L15ACD is a great solution for providing a constant output from a variable input. Its low-power consumption, high-stability operation and small size make it a great option for a range of applications in the communications, consumer electronics and office automation fields. Its internal short-circuit and over-temperature protection ensure its reliability and safety in those applications. The combination of the voltage reference terminal, quiescent current and error amplifier ensure that the output voltage remains constant despite changes in the input voltage. With all this in mind, it is clear to see why the L79L15ACD is such a popular choice for a linear voltage regualtor.

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