BA7812FP-E2

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PMIC, or power management integrated circuit, is one of the key elements in the field of system-level design. With the rapid development of the industrial market, various PMIC products are emerging, and BA7812FP-E2 is the typical representative of linear voltage regulators. It represents a very important class of PMIC voltage regulation components, and generally divided into linear and switching regulators. This article will further tell the application fields and working principle of BA7812FP-E2.

Application Field

The BA7812FP-E2 is a two-channel linear voltage regulator with regulated output voltage of +5V/+12V. This device is specially designed for low power applications with integrated chip resistors achieving high accuracy voltage output. It contains two linear voltage regulators with current control and over-current protection. This regulator is also very suitable for a variety of medium and low power supply circuits.

The stabilized output can be used in general digital products and power supply protection circuits, such as home appliances, digital products, communication devices, mobile devices and automotive electronics. Its high-quality performance and function allow it to become the first choice for power supply wiring systems of many electronic appliances. It is mainly used to provide stable power for FPGA and microprocessors, as well as memory chips.

Working Principle

The BA7812FP-E2 is a two-channel linear voltage regulator. A linear voltage regulator is a circuit which uses a voltage reference, usually generated by a Zener diode, to ensure a stable voltage regardless of changes in current load or line voltage. It converts the input to a fixed output voltage by using the concept of feedback, where the voltage regulator constantly compares the output voltage to a reference voltage and controls the output voltage over time to maintain the same output voltage in spite of any variations.

The BA7812FP-E2 is an integrated circuit (IC) device and contains an internal power transistors and a reference voltage. The reference voltage is connected between the pins 6 and 7, controlling the gate voltage of the transistors. As the voltage is increased, the transistor allows more of the power supply voltage to pass through, and this changes the output voltage. When the output voltage reaches the same level as the internal reference voltage, the transistor stops conducting and the output voltage is stable.

In addition, the BA7812FP-E2 also has an overvoltage protection circuit to ensure that output voltage does not exceed the designed voltage. The current control circuit eliminates the need for external resistors and achieves high precision output voltage by controlling the on-time of the output voltage.

Conclusion

In summary, the BA7812FP-E2 is a linear voltage regulator IC with two outputs of +5V/+12V and used for low power applications. Its operating principle is based on the concept of feedback, where a reference voltage is used to control the transistor gate voltage to maintain a stable output voltage. It can be broadly used in many fields and it also provides overvoltage protection to ensure that the output voltage does not exceed the designed voltage. It is an important component of the PMIC system in providing a steady and stable power supply voltage.

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