S-1142B42I-E6T1U

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Voltage regulators are widely used in electronic devices such as computers, televisions, and cell phones to maintain a stable supply of power and improve the efficiency of power management. In particular, linear voltage regulators are essential for computers, where a steady and reliable supply of power is critical. The S-1142B42I-E6T1U is an example of a linear voltage regulator, and this article provides an overview of its application field and working principle.

Application Field

The S-1142B42I-E6T1U is designed for automotive systems, such as car audio/video systems and controllers, vehicle communication systems and GPSs. Its low profile allows it to be mounted in tight spaces, making it an ideal choice for vehicles that lack sufficient space. It also features a wide input voltage range of 4.5V to 20V, which makes it compatible with many automotive batteries.

The S-1142B42I-E6T1U provides a stable output voltage of 12V, which is widely used in many automotive components. It offers a low quiescent current of 30mA, which saves system power and helps improve overall efficiency. Additionally, it features over-current, thermal and transient protection, which helps protect the circuit from damage caused by current surges, excessive heat or unexpected power outages.

Working Principle

The S-1142B42I-E6T1U is a linear voltage regulator, which means that the output voltage is equal to the input voltage minus a constant dropout voltage. To provide the correct output voltage, the S-1142B42I-E6T1U uses a reference voltage of 2.5V, which is then compared to the incoming voltage supplied by the automotive battery. When the input voltage is greater than the reference voltage, the S-1142B42I-E6T1U increases the current flow through the system to compensate for the difference. As the input voltage drops, the S-1142B42I-E6T1U reduces the current flow to maintain the desired output voltage. The S-1142B42I-E6T1U also features short-circuit protection and thermal shutdown protection to prevent system damage in the event of an over-current or excessive heat.

Conclusion

The S-1142B42I-E6T1U is a linear voltage regulator designed for automotive systems. Its low profile and wide input voltage range of 4.5V to 20V makes it ideal for vehicle systems that lack sufficient space. It also offers a stable output voltage of 12V and low quiescent current of 30mA, which helps improve the overall efficiency. Additionally, it offers over-current, thermal and transient protection, to help protect the system from surges, excessive heat and power outages. Ultimately, the S-1142B42I-E6T1U is an ideal choice for applications that require a reliable and efficient power supply.

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