MC7808BD2TG

Introduction

The MC7808BD2TG is a linear voltage regulator from ON Semiconductor. It is used as a controllable power source for providing voltage and ground distribution. This voltage regulator is specially designed for a low dropout voltage application and is capable of operating with an input voltage as low as 1.25 V. Additionally, it includes four distinct feedback nodes, two output voltage elements with voltage dividers, and two differential amplifier enabled current sensing pins.

Application Field

The MC7808BD2TG is designed for wide range of low noise, low quiescent current applications. Few of the areas in which this voltage regulator can be used are as follows:

• Bluetooth modules
• Data converters
• GPS units
• Point of sale (POS) terminals
• Audio amplifiers
• Telecommunication equipment
• Medical devices
• Security systems
• Automotive infotainment systems

Working Principle

The MC7808BD2TG operates on the principle of Thermodynamic Potential. The IC senses the thermal potential of its environment and adjusts the output voltage accordingly. This way, the output voltage generated by the IC is proportional to the ambient conditions, such as temperature and humidity. The voltage regulator is then able to maintain the output voltage at the desired level by varying the amount of current it supplies to the load.

The current sensing pins are used to detect the flow of current in the load circuit. This information is then used to control the output voltage. When the current sensing pins detect a differential voltage, it means that a load is present and the output voltage is set accordingly.

The MC7808BD2TG also contains two output voltage elements connected to a voltage divider network. This voltage divider network allows the IC to adjust the output voltage by changing the ratio of two resistors. By altering the resistance of either one of these resistors, the output voltage can be adjusted accordingly.

Conclusion

The MC7808BD2TG is a linear voltage regulator from ON Semiconductor. It is designed for a wide range of low noise, low quiescent current applications and is capable of providing adjustable output voltages. The voltage regulator works on the principle of Thermodynamic Potential and is equipped with two output voltage elements connected to a voltage divider network. Furthermore, it also includes two current sensing pins which are used to monitor the load current and maintain the output voltage level. The MC7808BD2TG is suitable for various applications such as Bluetooth modules, GPS units, POS terminals, audio amplifiers, medical devices, security systems, and automotive infotainment systems.