LM7912

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Voltage Regulator LM7912 The LM7912 is a highly efficient and reliable voltage regulator designed to maintain a stable output voltage in applications where power supply fluctuations are common. This device features an internal current limiting function that helps prevent excessive currents from flowing through the circuit, which can cause damage or overheating. Key Features: * High accuracy: The LM7912 maintains an accuracy of ± 1% at room temperature and up to ± 3% over its entire operating range. * Low noise: This voltage regulator produces low noise levels, making it suitable for use in applications where signal integrity is critical. * Wide operating range: The LM7912 can operate safely within a wide input voltage range of 18V to 38V. Operating Modes: The LM7912 operates in two modes: linear and switching. In the linear mode, it acts as a simple voltage regulator by dissipating excess energy as heat. However, this mode is less efficient than the switching mode, which utilizes an internal switch to regulate the output voltage. Key Applications: * Power supplies for industrial equipment * Automotive systems requiring stable voltage levels * Medical devices that require precise voltage regulation Package Information: The LM7912 comes in a TO-220 package with a thermal pad on the back for improved heat dissipation. The device is also available in a T0-3 package for surface-mount applications. Electrical Characteristics: * Input voltage range: 18V to 38V * Output voltage range: -15V to -50V * Quiescent current: 1.5 mA (typical) * Dropout voltage: 2.5 V (typical) This voltage regulator is an excellent choice for any application where precise and reliable voltage regulation is required.