S-1335E22-A4T2U3

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Linear voltage regulators are used to provide voltage stability, efficiency, and protections to applications such as low-voltage power supplies, consumer and industrial electronics, and automotive powersave. The S-1335E22-A4T2U3 is a high-performance, adjustable voltage linear regulator from Texas Instruments. This device consists of a low-dropout regulator and several integrated features that make it an excellent choice for powering various low voltage applications.

Application Field

The S-1335E22-A4T2U3 can be used specifically in low-voltage power supplies, consumer and industrial electronics, and automotive powersave applications. The device is a flexible and robust solution with a wide voltage input range and adjustable output voltage. This device also features low dropout voltage at full load, high output current capability, and thermal regulation. Furthermore, it can provide high accuracy output voltage regulation with only limited external components. The S-1335E22-A4T2U3 has low output noise and is designed to meet harsh environmental operation requirements.

Working Principle

The principle of linear voltage regulation lies in the splitting of an incoming DC voltage into two portions. The first portion is diverted to the load, providing the required power. The other portion is routed to the error amplifier which feeds back to the regulator circuit for voltage regulation. The incoming voltage is then adjusted to maintain the output voltage at a preset level. This regulation is accomplished by varying the current through the pass device, which is typically a transistor or MOSFET.

The main components of the S-1335E22-A4T2U3 include an adjustable error amplifier, pass transistor, and a voltage reference. The voltage can be adjusted using an external voltage divider connected to the adjustment pin. The adjustment pin will change the closed loop gain of the amplifier, which in turn changes the output voltage. The pass transistor is controlled by the error amplifier, which is compared with the reference voltage to adjust the pass transistor’s drain-source voltage (VDS). Finally, the current flow is controlled via the regulators current limiter, allowing for high efficiency and accurate current delivery.

The S-1335E22-A4T2U3 also provides various integrated protections against various fault conditions. These include thermal shutdown, over-voltage monitoring, under-voltage lockout, and over-current protection. The device further features various monolithic construction techniques to ensure superior noise immunity and low cost of production. Finally, the device is available in a variety of lead-free packages and is fully compatible with lead-free soldering processes.

Conclusion

The S-1335E22-A4T2U3 is an ideal choice for low-voltage power supplies, consumer and industrial electronics, and automotive powersave applications. It features low dropout voltage at full load, high output current capability, and thermal regulation. The device operates on a linear voltage regulation principle and has several integrated features that protect the device from various fault conditions. Moreover, the simple external component configuration and lead-free packaging make the device an excellent choice for a range of applications.

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