L7912ACV

Current - Output:	1.5A
Base Part Number:	L7912
Supplier Device Package:	TO-220AB
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):	3mA
Series:	--
Voltage Dropout (Max):	1.1V @ 1A (Typ)
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	-12V
Voltage - Input (Max):	-35V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Negative
Part Status:	Active
Packaging:	Tube

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L7912ACV - Introduction

The L7912ACV is a voltage regulator with a wide range of applications, most notably in automotive electronics, power supplies, and telecommunications. It provides a stable and reliable power source for a variety of circuits and components in challenging environments. It enables devices to be powered safely and efficiently, even in extreme temperature and pressure conditions.

L7912ACV - Applications

L7912ACV is primarily used in automotive electronics and power supplies. In automotive electronics, it is used in systems such as car radios, dashboard instrumentation, engine control systems, and other equipment reliant on higher battery voltages. In power supplies, it is used to regulate the output to devices such as digital cameras, portable gaming devices, and power system controllers. The device is also used in telecommunications and manufacturing. In telecommunications, it is used to regulate power supplies in radio towers, antennas, and other equipment requiring stable power supplies. In manufacturing, it is used in assembly-line machines, such as lathes and milling machines, as part of the power control system.

L7912ACV - Working Principle

The L7912ACV is a voltage regulator based on the linear regulator principle. It employs a precision voltage reference and a set of error amplifiers to maintain the output voltage at a steady and predetermined level.The device is designed to provide electrical power with very little voltage fluctuation. It senses the output voltage and then adjusts the input current accordingly to maintain constant output. It also prevents any over-voltages or excessive current from damaging the devices it is connected to.The regulator is essentially a voltage divider, containing two resistors, a precision reference voltage, and two error amplifiers. When input power is applied, the resistance of the divider is established, and the output voltage is determined. The two error amplifiers each contain op-amps, with the non-inverting input connected to the voltage reference. When the output voltage deviates from the reference voltage, the op-amps switch the output transistors to draw or dissipate current, thus regulating the voltage to the reference voltage.

Conclusion

The L7912ACV is a versatile and reliable voltage regulator with a wide range of applications, primarily in automotive electronics and power supplies. It is based on the linear regulator principle and employs a precision voltage reference and a set of error amplifiers to maintain the output voltage at a steady level. It is designed to provide electrical power with very little voltage fluctuation, and helps to prevent any over-voltages or excessive current from damaging the devices it is connected to.

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