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PMIC - Voltage Regulators - Linear

SG7812K-JAN Application Field and Working Principle

The SG7812K-JAN voltage regulator is an integrated circuit (IC) designed to regulate the output voltage of an AC or DC power supply. It\'s an intelligent, adaptable and affordable product ideal for a wide range of applications. The SG7812K-JAN voltage regulator is designed with low power consumption and high output current capability to deliver a regulated output voltage. This IC can function as both linear and switching regulators and is commonly used in commercial and industrial applications.

The SG7812K-JAN is a low dropout (LDO) voltage regulator with an improved technology for delivering the check and control of the input and output voltages with low noise performance. It is designed to operate in various input voltage ranges from 4V to 36V and output voltage from 1.2V to 3.3V. The SG7812K-JAN is a three terminal device with a maximum output current of 1A and a voltage drop of 1V. It is available in an 8T SOIC (small-outline integrated circuit) package.

The operating principle of the SG7812K-JAN voltage regulator involves a tight regulation of the output voltage by controlling the field effect transistors (FET) current in the form of a switched dc-to-dc converter. The SG7812K-JAN contains two FETs which are connected in series. As the voltage drop between the FETs increases due to increasing load, the drain to source current of the lower FET increases, allowing the upper FET to conduct more current and providing the requisite regulation of the output voltage.

The SG7812K-JAN voltage regulator also has other features such as thermal overload protection and short-circuit protection. It has a wide variation of working temperature from -40°C to 90°C, making it suitable for harsh working conditions. It also has good ripple rejection capability and is highly efficient.

The SG7812K-JAN voltage regulator is ideal for a number of applications such as portable electronic equipment, TFT LCDs, ICs, optoelectronic instrumentation, cellular phones and telecom applications.

In conclusion, the SG7812K-JAN voltage regulator is a great choice for small, high-performance voltage regulation applications. It is designed with low power consumption and high output current capability with various safety features. It provides tight regulation of the output voltage by controlling the FET current and is suitable for a wide range of applications.

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