LM78L12ACZ/LFT7

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Linear voltage regulators are fundamental component in power solution design. The LM78L12ACZ/LFT7 series is a low-dropout three-terminal positive linear integrated circuit, specifically designed for use with lower current loads. As a member of the 78L series, the device offers improved performance over 7805. This series of regulators is designed to provide higher current output and improved line and load regulation.

The LM78L12ACZ/LFT7 voltage regulator is designed to keep the output voltage constant over input voltage and load variation. The LM78L12ACZ/LFT7 is mainly used in an application where the regulated output voltage is required and input voltages are considered to be higher than output voltage. It is recommended for low current supplies where accurate voltage control and low power consumption are required.

Application Field

The LM78L12ACZ/LFT7 voltage regulator is mainly used in industrial, commercial and consumer applications. The most common applications include power supply for motherboards, laptop adapters, LED lighting and portable devices. These regulators are also used in clock systems and other applications providing power supply. This voltage regulator is designed to provide reliable power to a wide range of consumer applications.

The LM78L12ACZ/LFT7 is designed to absorb up to 4V of input ripple making it especially useful in applications utilizing unregulated AC power sources and sources where output voltage fluctuations can occur. This helps to provide reliable, efficient and stable operation.

Working Principle

A voltage regulator is mainly used to regulate the voltage level from an unstable or fluctuating input voltage source and supply voltage to an output device. The LM78L12ACZ/LFT7 operates by comparing the output voltage with a reference voltage. The error amplifier rectifies the output voltage by by varying the duty cycle of the internal Power FET. The internal oscillator provides the switching frequency and regulates the on/off time of the FET thus controlling the output voltage.

The LM78L12ACZ/LFT7 internal compensation technique maintains the stability of the out voltage while offering a high voltage accuracy over temperature. The voltage reference terminal is connected to the precision voltage source at the factory when it is shipped. This voltage reference circuit provides a set of accurate output voltages in the normal operating range.

The LM78L12ACZ/LFT7 regulator also features both Thermal Shutdown and Current Limit Protection. Thermal shutdown protects the device against excessive temperatures, while current limit protects it against excessive current. Both of these protection features reduce stress placed on the regulator andensure its performance over temperature, line and load variations.

The LM78L12ACZ/LFT7 is a low-cost, easy-to-use and reliable device for a variety of applications. Its feature set and versatility allow it to fulfill a wide range of power requirements. Its easy-to-use packaging and ease of integration with other components make it a great choice for use in many applications including communication systems and other electronic devices.

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