L7812ACV-DG

Voltage Dropout (Max):	2V @ 1A (Typ)
Base Part Number:	L7812A
Package / Case:	TO-220-3
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 125°C
Protection Features:	Over Temperature, Short Circuit
Control Features:	--
PSRR:	60dB (120Hz)
Current - Quiescent (Iq):	6mA
Current - Output:	1.5A
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	12V
Voltage - Input (Max):	35V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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The L7812ACV-DG is a popular three-terminal voltage regulator integrated circuit in the PMIC (Power Management Integrated Circuit) family. It is classified as a Linear Voltage Regulator that is ideal for supplying a stable and accurately regulated supply voltage. It is a cost-effective, versatile and easy-to-use solution for applications like voltage reference, voltage scaling, and voltage energization purposes.The L7812ACV-DG is equipped with features such as low output noise, thermal overload protection, short circuit protection, current limiting, over voltage protection, and adjustable voltage regulation. It is available in TO-220 and DPAK packages, making it an ideal choice for a variety of applications.The L7812ACV-DG has a wide input voltage range, from 3 V to 40 V and an adjustable output voltage, from 1.25 V to 36 V. It can deliver up to 1.5A of current. The output current and voltage are stable even when the input voltage varies. It has a dropout voltage of 1.5 V at 1.5 A, allowing it to maintain regulation even at lower input voltages.The operating temperature range for the L7812ACV-DG is -40°C to +125°C, making it suitable for applications in a wide range of environments. It is efficient and offers high power dissipation, making it a great choice for those who need reliable power supplies.The design and implementation of the L7812ACV-DG is highly mechanized. It utilizes a linear regulator design methodology, which is why it is classified as a linear regulator. This design methodology is based on the use of an active resistor, also known as a reference, to reduce the voltage fluctuations in the output voltage. The reference, or linear regulator, is connected between the input and the ground potential, acting as a constant current source and allowing for a rapid, accurate voltage regulation.The active resistors, or linear regulator, is connected to a voltage feedback network, which is composed of the op – amps, current sense resistor and filter capacitor. The filter capacitor is used to smooth the output waveform and reduce the undesirable ripple and noise in the output waveform. The op – amps sense the change in the output waveform and adjust the operational parameters dynamically, to keep the output waveform as close to the desired value as possible.The operating parameters of the linear regulator, such as the voltage reference, current-limit value and other settings, can be programmed by connecting them to the logic and microcontroller circuitry present on the circuit board.The working principle of the L7812ACV-DG is very simple. It takes an input voltage, the voltage reference and the current limit, and provides a regulated and stable output voltage, no matter the input voltage. The voltage feedback loop is used to ensure that the output voltage follows the voltage reference as closely as possible. Since the input voltage is kept stable, no oscillations are introduced and the output waveform remains very clean and steady.The L7812ACV-DG is a popular choice in a wide range of applications, including consumer electronics, industrial automation, computer peripherals and other applications that require stable, reliable and inexpensive power supplies. Its wide input voltage range and easy-programming process make it an ideal choice for any application. Furthermore, due to its low noise, low dropout voltage and efficient design, it can be used for even more demanding applications.

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