L7812CV-DG

Current - Output:	1.5A
Base Part Number:	L7812
Supplier Device Package:	TO-220
Package / Case:	TO-220-3
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 125°C
Protection Features:	Over Temperature, Short Circuit
Control Features:	--
PSRR:	55dB (120Hz)
Current - Quiescent (Iq):	8mA
Series:	--
Voltage Dropout (Max):	2V @ 1A (Typ)
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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Introduction

The L7812CV-DG is a voltage regulator integrated circuit manufactured by ST, a multinational electronics company. It is designed to provide a constant output voltage for a variety of applications, including linear power supplies, motor control applications, and general-purpose voltage regulation. The L7812CV-DG is a positive voltage regulator, meaning it regulates the positive output voltage, rather than the negative. It is rated for an output current of up to 1.5A, and has an operating input voltage range of 7 to 35V. It is available in the form of an 8-pin dual in-line plastic package (DIP-8).

Application

The L7812CV-DG voltage regulator is suitable for a variety of applications, including linear power supplies, motor control applications, and general-purpose voltage regulation. It is commonly used in electronic circuits where a constant regulated voltage source is required. For example, it can be used to regulate the output voltage of a solar panel, or to provide a stable voltage supply for microcontroller-based circuits.In a linear power supply, the L7812CV-DG serves as the main voltage regulator. It is responsible for regulating the output voltage of the power supply according to the input voltage. The output voltage can be adjusted by changing the value of an external resistor connected to the regulator’s adjustment pin. The maximum output current can be limited by an external current-limiting resistor connected to the regulator’s current-limiting pin.In motor control applications, the L7812CV-DG is used to regulate the voltage across the motor’s windings. The voltage across the motor’s windings must be kept constant in order to prevent excessive current from flowing through the motor, which can cause damage. By controlling the voltage across the motor’s windings, the L7812CV-DG helps to ensure that the motor runs smoothly and efficiently.

Working Principle

The L7812CV-DG is a voltage regulator integrated circuit that regulates the output voltage of a power supply or motor control circuit according to an external reference voltage. The output voltage is determined by an adjustable resistor connected to the regulator’s adjustment pin. The regulator maintains a constant output voltage by comparing the input voltage to the reference voltage and adjusting the output voltage accordingly.The L7812CV-DG also has a built-in current-limiting function. This function prevents excessive current from damaging the components of the circuit. When the output current reaches a certain level, the current through the output transistor is reduced to limit the current flowing through the circuit.

Summary

The L7812CV-DG is a voltage regulator integrated circuit manufactured by ST. It is suitable for a variety of applications, including linear power supplies, motor control applications, and general-purpose voltage regulation. The L7812CV-DG is a positive voltage regulator, rated for an output current of up to 1.5A, and has an operating input voltage range of 7 to 35V. It is available in an 8-pin DIP-8 package. The output voltage is adjusted by a resistor connected to the regulator’s adjustment pin, and the current-limiting function prevents excessive current from damaging the components of the circuit.

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