0936070073

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Part Status:	Active

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0936070073 Application Field and Working Principle

0936070073 is an integrated circuit that operates as a voltage regulator and protects a system potentially from dangerous overvoltages. Reach to its application fields, 0936070073 is mainly used in mobile phones, power supply and industrial control. In addition, this kind of LDOs can also be applied in automotive, lighting, battery, RFID, etc. As to its working principle, it applies negative feedback loop circuit which is a method enables its output voltage to be kept nearly constant irrespective of changes in its input voltage or load current. Referring to the internal circuit, 0936070073 contains an opamp or transconductance amplifier feedback to keep the output voltage in its setpoint. The design includes a further inner loop, enabling the opamp to achieve a fast transient response.In detail, the power circuit of 0936070073 includes a low dropout (LDO) linear regulator, providing accurate and efficient voltage regulation by limiting the current, in which the linear regulator is controlled by two transistors whose source-drain path is connected in parallel. The two transistors in 0936070073 act as a low-pass filter to determine the rate of current drawn through the two transistors. When the input voltage is exceeded or lower than its setpoint, the two transistors naturally then become non-linear drivers. Consequently, the current flow through the series paths of the two transistors is significantly reduced, resulting in the decrease of power consumption and internal temperature.Moreover, whereas the two transistors in the power circuit are acting as a low-pass filter, the feedback opamp or transconductance amplifier also can help to correctly detect the input voltage and then correct the adjustment in order to maintain a constant voltage in the output of the 0936070073. That means, once the supported input voltage is higher than the setpoint, the resistors connected to the output are automatically adjusted to reduce current through the transistors. On the contrary, if the supported input voltage is lower than the setpoint, the resistors connected to the output are automatically adjusted to increase the current.

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