BU4213G-TR Integrated Circuits (ICs)

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PMIC - Supervisors are active circuit devices that are used to monitor power supplies and other power circuits. They monitor various properties of power supplies such as voltage, current, temperature, and other factors in order to ensure that the power supply remains within its allowable operating range. The BU4213G-TR is one such PMIC supervisor that provides multiple monitoring features in a compact package. This article will discuss the application field and working principle of the BU4213G-TR.

Application Field

The BU4213G-TR is targeted for uses in all kinds of advanced electronic systems that require precision voltage and other protections. The supervisor is most commonly used in advanced electronic systems such as PCMCIA card slot, laptop and embedded computer systems, baseband and cellular communication systems, set-top-boxes, memory and processor boards, as well as automotive applications. Its small package size (2.2mm x 2.7mm) also makes it one of the preferred supervisors for these applications.

Working Principle

The BU4213G-TR is a step-down voltage regulator with a pulse-width modulation (PWM) feature. It is capable of outputting a constant voltage at any current level between 3V and 5.5V. The regulator is composed of three key components: a voltage monitoring circuit, a PWM comparator, and an output driver circuit. The voltage monitoring circuit is composed of a set of resistors, capacitors, and a voltage divider network that is used to detect the input voltage level. If the input voltage rises or falls beyond a certain threshold, then this will be detected by the voltage monitoring circuit and the PWM comparator will shut off the output driver circuit, effectively cutting off the power supply.

The BU4213G-TR also provides an adjustable over and under voltage protection, as well as an adjustment for the output voltage. This allows the output voltage to be varied depending on the system\'s needs. Additionally, the supervisor provides an adjustable over current protection that can be configured according to the system\'s needs, as well as an adjustable short circuit protection and a power-on-reset function. All of these features make the BU4213G-TR a perfect choice for advanced electronic applications.

Conclusion

The BU4213G-TR is an advanced PMIC supervisor that is commonly used in advanced electronic systems. It provides adjustable over and under voltage protection, as well as adjustable over current protection and a power-on-reset function. It also has a small package size that makes it ideal for embedded applications. All of these features make the BU4213G-TR the perfect choice for precision voltage and other protections.

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