BA07SFP-E2

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BA07SFP-E2 is a design of linear voltage regulator (LVR). Its application field and working principle can be summarized as follows.

Application Field

BA07SFP-E2 is a low dropout (LDO) Linear Voltage Regulator with best accuracy guaranteed, that serves to precisely provide the regulated electrical power output required for many kinds of electronic circuit applications.

Furthermore, BA07SFP-E2 can enable a higher system efficiency by reducing electrical power loss experienced in switching regulators, as BA07SFP-E2 offers a linear voltage regulation with a considerably low dropout voltage.

BA07SFP-E2 is mainly used in the field of mobile communications systems such as cellular phones, portable radios, and voice pagers. Additionally, BA07SFP-E2 can be used in other consumer electronics devices, such as digital cameras, calculators, audio amplifiers, portable computers, and similar applications where the low power output is required.

Working Principle

Unlike switched mode power converters, the working principle of BA07SFP-E2 is based on a linear DC-DC conversion. In its application field, BA07SFP-E2 is needed to regulate a non-constant DC voltage into a constant DC output within a very small voltage range. The output voltage may appear higher or lower than that of the input voltage.

BA07SFP-E2 is composed of a resistive element, a P-channel power MOSFET, and an operational amplifier that operates as a voltage regulator. The operational amplifier compares the difference between the external reference voltage and the output voltage with the help of a resistive element, also known as a feedback resistor. Then, based on the transistor control, the operational amplifier is able to maintain the output voltage within a controlled range.

By doing so, the load current and output voltage are maintained at a steady level when the input voltage changes. Thus, a regulated output voltage is enabled and energy-saving is realized.

Conclusion

BA07SFP-E2 is a linear voltage regulator which is mainly used in mobile communications systems and consumer electronics products. The working principle of BA07SFP-E2 is based on a linear DC-DC conversion. With the help of a resistive element, also known as a feedback resistor, the operational amplifier is able to maintain the output voltage within a controlled range. By doing so, the load current and output voltage are maintained at a steady level and energy-saving is realized.

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