L78S12CT

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L78S12CT is a 3-terminal linear voltage regulator designed by ST Microelectronics. It is a low current, low dropout positive voltage regulator that provides outputs of 5V, 6V and 8V (depending on the voltage applied). The device is designed to be a low power alternative to standard linear voltage regulators while providing the same level of performance. The L78S12CT is designed primarily for use with low current power supplies. It is ideal for applications requiring a low noise and efficient voltage source such as cell phone chargers and other portable electronics.

L78S12CT works by using a low-power switching transistor, referred to as a “Buck Converter”, to create the desired output voltage. The Buck Converter operates by controlling the switch gate voltage of the transistor, which in turn adjusts the current flow through the transistor. This allows the output of the L78S12CT to be adjusted by controlling the gate voltage. The output voltage of the L78S12CT is then regulated using a built-in reference voltage and a feedback loop.

The L78S12CT features a wide input voltage range of 2.5V to 38V and low quiescent current of 0.25mA. It is able to provide a high output current of up to 800mA and an adjustable output voltage range of 4.75V to 30V. The device also features an internal thermal shutdown, overvoltage protection, and short-circuit protection.

L78S12CT can be used to regulate any DC voltage, from low-power consumer electronics to high-power industrial applications. One of the most common applications for the L78S12CT is voltage regulation for automobile electronics, allowing consumer electronics to run from vehicle batteries. It is also commonly used as a voltage regulator in consumer electronics such as laptop chargers, MP3 players and mobile phones.

The L78S12CT is a low-cost, low-power voltage regulator suitable for a variety of applications. With its wide input voltage range, low dropout voltage, high output current capability, and internal protection it is an ideal choice for applications that require a compact and reliable voltage regulator.

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