UA78L05ACLPME3

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The UA78L05ACLPME3 is a three-terminal voltage regulator that is classified under the PMIC-Voltage Regulator-Linear category. Its operating principle and application field are relatively straightforward and understood by most electronic enthusiasts.

The main feature of UA78L05ACLPME3 is its ability to provide reliable, low-noise output when used in systems where power levels are relatively low. It operates on three-terminal voltage regulator where input voltage is larger than the prescribed output voltage. The regulator then reduces the output voltage by either dropping the input voltage or dissipating the excess power as heat.

The UA78L05ACLPME3 is primarily suited for low power applications where an output voltage of 5V is required. It is commonly used in products such as PCs, portable audio systems, and office equipment. It also finds use in automotive applications where stringent voltage stability is needed. Moreover, the regulator is wide-temperature range compatible, making it well-suited for automotive applications where temperature isn’t too extreme.

One of the major advantages of the UA78L05ACLPME3 is its ability to provide a stable output voltage. It has an on-resistance of 0.08Ω and can handle a load current up to 100mA. The load regulation of the device is 3% maximum, making it ideal for applications where very tight voltage regulation is required. The UA78L05ACLPME3 also offers excellent thermal stability, allowing it to remain within its specified output voltage range over a wide temperature range.

The UA78L05ACLPME3’s operating principle is relatively simple. It is a three-terminal voltage regulator which utilizes a power transistor to control the output voltage. The device works by varying the resistance of the NPN power transistor based on the feedback voltage from the output pin. This feedback voltage is compared to a preset reference voltage, and when the difference between them exceeds a predetermined amount, the transistor’s resistance is either increased or decreased to maintain a stable output voltage.

Overall, the UA78L05ACLPME3 is a reliable voltage regulator for low power applications. It offers good load regulation and thermal stability, enabling it to remain within its specified output voltage range over a wide temperature range. Additionally, its power transistor design makes it well-suited for automotive applications where very tight voltage regulation is required.

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