S-1333D29-M5T1U3

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The S-1333D29-M5T1U3 is an adjustable positive voltage regulator designed for low-power electronic systems, operating in a wide range of input voltages with either an adjustable or a fixed output voltage. This voltage regulator is designed to provide high accuracy, low voltage drop, fast response times, and low output ripple response over a wide range of operating conditions. It is a linear regulator that uses a BJT as input stage and a single MOSFET as output stage. It includes built-in soft start, thermal limiting, and current limiting features.

Application Field

The S-1333D29-M5T1U3 has a wide range of applications due to its flexibility and low-power requirements. This voltage regulator is widely used in personal computers, mobile phones, digital cameras, and embedded systems due to its ability to accurately regulate output voltage. This regulator is also suitable for low-current, low-voltage applications such as powering up audio amplifiers and other analog circuits.

Working Principle

The S-1333D29-M5T1U3 is composed of two stages: an input stage and an output stage. The input stage consists of a PNP bipolar junction transistor (BJT) and a resistor connected in series between the input and output. At the output side, a P-channel MOSFET is connected to the input stage’s BJT collector, providing a low-power, stable output voltage.

The regulator adjusts output voltage by varying the bias current of the BJT. This allows the regulator to provide a wide range of regulated output voltages, from 1.25 to 13.0 V. In addition, the P-channel MOSFET is designed to limit the input current and provide fast current limiting during startup and fault conditions. The BJT also serves to protect the MOSFET from overvoltage.

The S-1333D29-M5T1U3 voltage regulator also includes two protection features, thermal limiting and soft start. The thermal limit feature prevents thermal runaway by turning off the BJT if the temperature exceeds a certain limit. The soft start feature allows the regulator to ramp up slowly to its set output voltage, thus reducing inrush current at startup and minimizing power supply transients.

Benefits

The S-1333D29-M5T1U3 voltage regulator provides a range of benefits, including high accuracy, low dropout, fast response times, low output ripple, and several advanced protection features. Its low power consumption allows it to be used in portable and mobile devices, while its wide range of input and output voltages make it suitable for a variety of electronic systems. It can also be used in high-speed switching systems to reduce EMI and RFI noise.

The S-1333D29-M5T1U3 is a versatile and reliable voltage regulator that can be used in many different types of applications. It is an ideal choice for systems that require low-power, accurate voltage regulation, and its advanced features provide added protection and reliability.

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