Low Dropout (LDO) Regulator Calculator
The Low Dropout (LDO) Regulator Calculator determines the dropout voltage of an LDO regulator at operating currents not specified in the datasheet. An LDO regulator is a type of voltage regulator used in electronic devices to maintain a constant output voltage level, despite fluctuations in the input voltage or changes in the load current. The "dropout" refers to the minimum voltage difference between the input and output voltages required for the regulator to maintain regulation. LDO regulators are commonly used in battery-powered devices and in noise-sensitive applications.
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The application datasheet of LDO regulators may not contain the voltage dropout information required for all applications. This calculator provides a specific voltage dropout at all operating currents, making it easy for the designer to obtain the dropout value for a specific application.
Example: Calculate the dropout voltage for an LDO operating with Vin = 4 V, Vout = 3.3 V and an operating current of 100 mA. The test current and maximum dropout voltage as specified in the datasheet are 200 mA and 160 mV respectively.
