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KA7915 Datenblatt

| Telefon | Teilenummer | Paket | Beschreibung |
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Linear voltage regulators—also called LDOs or low-dropout linear regulators—use a transistor controlled by a negative-feedback circuit to produce a specified output voltage that remains stable despite variations in load current and input voltage.
A linear regulator employs an active (BJT or MOSFET) pass device (series or shunt) controlled by a high gain differential amplifier. It compares the output voltage with a precise reference voltage and adjusts the pass device to maintain a constant output voltage.
The voltage regulator in a linear power supply acts as a variable resistor. This allows the output resistance value to change to match output power requirements. Because the voltage regulator is constantly resisting current to maintain a voltage, it also acts as a power dissipating device.
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