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Introduction

The PQMB11Z is a general-use pre-biased array of two bipolar junction transistors (BJT). This device is designed to reduce the complexity of power supply sequencing in applications that require reduced power dissipation, such as notebook computer power supply systems. In addition, the PQMB11Z is capable of supporting high current transfer efficiently in applications requiring a single BJT, such as power amplifiers and high-powered converters. This article will discuss the application field and working principle of the PQMB11Z.

Application field

The PQMB11Z can be used in a wide variety of applications requiring two BJT transistors. In power supply circuit design, the device can be used to reduce power consumption by allowing the user to sequence power on and off more efficiently. This is due to the fact that the PQMB11Z has built-in voltage trimming which eliminates the need for external resistor chains. By eliminating these resistor chains, power consumption can be significantly reduced. In addition, the PQMB11Z is also suitable for use in audio equipment including high-powered amplifiers and converter circuits. The device is designed to provide low output offset and high current transfer efficiency to accurately transfer audio signals.

Working principle

The PQMB11Z works by combining two BJT transistors into one package. Each BJT consists of an emitter, a base and a collector. The device’s voltage trimming is accomplished by the interconnection of the collectors and the emitter of each of the two BJT transistors. This creates a voltage divider circuit at the device’s output. When the device is powered, the two BJT transistors conduct simultaneously, creating a “push-pull” circuit which can efficiently transfer even large currents of electrical energy.

Conclusion

The PQMB11Z is a general-use pre-biased array of two bipolar junction transistors (BJT). This device is useful in applications requiring two BJT transistors, such as power supply sequencers and audio amplifiers and converters. Its built-in voltage trimming allows it to reduce power consumption while providing high current transfer efficiency. Its interconnection of the collectors and the emitter of each of the two BJT transistors create a voltage divider circuit which allows it to efficiently transfer even large current loads.

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