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PMIC - Voltage Regulators - Linear

The uA78L15ACPK is part of an integrated circuit developed by Fairchild Semiconductor and widely used as a linear voltage regulator. It is especially favored due to its excellent performance-price ratio and its wide selection of output voltages and current ranges. It is widely used in a variety of applications including automotive, industrial, telecommunications, and consumer electronics.

Features of the uA78L15ACPK

• Input voltage can range from 3V to 25V
• Output voltage range from 1.2V to 20V
• Output currents up to 1A
• Thermal protection
• Short Circuit protection
• Fast load response
• Accurate output voltage
• Very high efficiency

Application Fields for the uA78L15ACPK

The uA78L15ACPK is a versatile linear regulator providing easy and cost-effective solutions for a wide range of voltage regulation needs. Common application areas include:

• Automotive electronics
• Industrial electronics
• Telecommunications
• Alarm systems
• Power supplies
• UPS systems
• Consumer electronics

Working Principle of the uA78L15ACPK

The uA78L15ACPK is a linear voltage regulator, meaning that it works by maintaining a fixed, stable output voltage, despite variations in the input voltage or load current. This is achieved using a series of transistors which works as a controlled current source. The input voltage is connected to the base of the transistor, while the output voltage is connected to the collector. The voltage between the base and the collector is dependent on the gain of the transistor, which is also temperature-dependent. The control loop then adjusts the voltage across the transistor to hold the output voltage as close to the desired value as possible.

The uA78L15ACPK is designed to work with PNP transistors and is capable of working with input voltages up to 25V. It has a wide range of output voltages and is capable of providing currents up to 1A. It has excellent efficiency, fast load response, accurate output voltage, and short circuit protection. It also has built-in thermal protection to prevent the circuit from overheating.

The uA78L15ACPK is a highly versatile and reliable linear voltage regulator, which can be used in a wide range of applications. It offers excellent performance-price ratio and is easy to use, making it a popular choice for many applications.

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