BU28SA4WGWL-E2 Integrated Circuits (ICs)

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BU28SA4WGWL-E2 Application Field and Working Principle

BU28SA4WGWL-E2 is a member of a series of linear voltage regulators produced by Tokyo Technological Institute (TTI). The series consists of three types: BU28SA4WGWL-E2, BU28SA4WGM-E2 and BU28SA4WGL-E2, which each provide a fixed output voltage ranging from 2.5 V to 5.5 V. This series is suitable for applications that can tolerate low-power output, such as non-volatile memory (e.g. EEPROMs) and select lithographic printing systems.

BU28SA4WGWL-E2, specifically, is a two-terminal adjustable linear voltage regulator offering 1.2 mA output current. Its voltage range is 24 V to 36 V, and it can easily maintain said output voltage (2.5 V to 5.5 V) by adjusting the potentiometer. For better performance and efficiency, the device incorporates thermal protection circuit, reverse battery protection, reverse current protection, and over-temperature protection. It is also suitable for automotive applications due to its reduced power consumption.

Working Principle of BU28SA4WGWL-E2 Voltage Regulators

BU28SA4WGWL-E2 voltage regulators are based on a basic linear supply design. The linear design relies on the fact that a low-power, low-dropout voltage regulator\'s output voltage is proportional to the voltage difference (sometimes referred to as the drop) between its input and output voltage. By applying a series of transistors and resistors, the voltage is often converted from a higher to a lower voltage level.

The idea behind linear voltage regulators is to maintain constant voltage at the output while dissipating the power drop as heat in a heat sink. To regulate the output voltage, the devices employ a series of transistors that supply the current in a manner proportional to the current at the output. The output voltage is then regulated by monitoring the input voltage and controlling the amount of current that flows into the output according to the difference between the input and output voltage.

To ensure stability, a feedback loop is included, which monitors the output voltage and adjusts the input current accordingly. If the output voltage rises too high, the feedback loop reduces the input current to reduce the output voltage. On the other hand, if the output voltage drops below its intended value, the feedback loop increases the input current to restore the output voltage to the desired level.

As with any power supply design, the efficiency of the BU28SA4WGWL-E2 voltage regulator is dependent on its application. However, the overall performance of the device is highly stable, especially when compared to other linear voltage regulators. This is due to the fact that the device utilizes a feedback loop, which ensures that the output voltage is constantly monitored and regulated.

Application Fields

BU28SA4WGWL-E2 voltage regulators are used in many applications, such as automotive, industrial, energy management, medical, and consumer electronic products. It is ideal for use in applications requiring a stable, low-power output, such as non-volatile memory (e.g. EEPROMs) and select lithographic printing systems. The device is especially well-suited for automotive applications due to its low power consumption.

Applications also include motor motion control systems, security systems, battery backup systems, and other consumer electronic products. Moreover, its extremely high levels of surge performance, low output noise and ripple, and reverse battery protection make it a perfect choice for applications requiring reliable performance. Furthermore, the device can easily be mounted in tight spaces, thanks to its tiny size.

Summary

BU28SA4WGWL-E2 is a two-terminal adjustable linear voltage regulator offering a wide output voltage range (2.5 V to 5.5 V). Its voltage range is 24 V to 36 V, and it can easily maintain said output voltage by adjusting the potentiometer. The device incorporates thermal protection circuit, reverse battery protection, reverse current protection, and over-temperature protection. It is suitable for automotive applications due to its reduced power consumption.

The basic linear supply design of the BU28SA4WGWL-E2 voltage regulator implements a series of transistors and resistors to convert a higher voltage to a lower voltage level, and also employs a feedback loop to regulate the output voltage. The device is ideal for use in low-power output applications, such as non-volatile memory and automotive applications.

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