UA78L08CDG4

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The UA78L08CDG4 is an integrated monolithic voltage regulator from Texas Instruments. It is a three-terminal positive voltage regulator designed for use in applications where tight regulation and low power dissipation are desired. The UA78L08CDG4 belongs to the PMIC (Power Management ICs) voltage regulators subcategory of linear regulators.

The UA78L08CDG4 is capable of delivering 8V regulated output with a load current up to 100mA, and features a wide input voltage range of 6V to 36V. It has a 0.8V reference voltage and an output voltage accuracy of ±1%. The UA78L08CDG4 requires only 2 external components – a capacitor and a resistor – to complete the power converter design, making it a very cost-effective solution.

The UA78L08CDG4 is commonly used in industrial and consumer applications. In industrial applications it is used in high power supplies, motor control, solar inverters, etc. Among consumer applications, the UA78L08CDG4 is used in battery-powered products, TV remote controls, portable CD players, and other small low-power applications.

The working principle of the UA78L08CDG4 is based on the linear regulator concept. It is a three-terminal regulator with its input, output, and ground terminals. The input voltage is applied to the input side of the regulator and the output voltage is obtained from the output side. The ground terminal is connected to the device’s internal ground.

At its core, the UA78L08CDG4 consists of an internal voltage reference, a series pass element, a temperature compensator elements, and an output stage. The internal voltage reference provides the output voltage level to be regulated. The series pass element is a transistor that is connected in series with the input voltage. On the output side, the transistor is connected to the output voltage. The temperature compensator controls the output voltage as it changes with temperature. The output stage is a transistor that is connected to the output voltage terminal and controls the output current.

The UA78L08CDG4 also includes over current protection, temperature protection, and load regulation features. The over current protection ensures that the output current does not exceed a certain level. The temperature protection ensures that the device does not get too hot and the load regulation feature ensures that the output voltage remains relatively stable even when the load current changes.

In summary, the UA78L08CDG4 is an integrated linear voltage regulator. It has a wide input voltage range and a high output current capability making it suitable for a wide range of applications. It is easy to use and requires minimal external components. It has protective features to guarantee safe and reliable operation for different applications.

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