BD15GA5WEFJ-E2

The BD15GA5WEFJ-E2 is a linear voltage regulator that is used in applications across a wide variety of industries, including telecommunications, industrial automation, engineering test equipment, consumer electronics, automotive and medical applications. The BD15GA5WEFJ-E2 is a three-terminal voltage regulator that is designed to provide a constant output voltage with only a few external components, providing clean reliable power with excellent line and load regulation characteristics.

Features

• NPN bipolar junction transistor (BJT)
• Sub-2V/3A adjustable outputs
• Integrated protection circuitry
• Internal voltage setting options
• Excellent line/load regulation
• High efficiency switching regulator

Applications

• Industrial Automation
• Engineering Test Equipment
• Consumer Electronics
• Automotive
• Medical Devices

Working Principle

The BD15GA5WEFJ-E2 utilizes a NPN Bipolar Junction Transistor (BJT) to regulate the output voltage. The BJT acts as a pass element, acting as a variable resistor to regulate the output voltage.The transistor is triggered by a control voltage that is generated by an external resistor divider connected to the output voltage. When the output voltage is higher than the reference voltage, the transistor is switched on, thus decreasing the voltage and preventing the output voltage from exceeding the preset maximum voltage. The opposite is true when the output voltage is lower than the reference voltage; the transistor is switched off to increase the voltage and prevent the output voltage from dropping below the preset minimum voltage.

The BD15GA5WEFJ-E2 also features integrated protection circuitry that helps protect the device from over voltage, over current, transient voltage surges, and other possible damage. The device also features several internal voltage setting options, allowing it to be easily configured for the desired output voltage range.

Conclusion

The BD15GA5WEFJ-E2 is a three-terminal linear voltage regulator that is designed to provide a constant output voltage with minimal components while providing excellent line/load regulation and protection circuitry. The device has been designed to be used in a wide variety of applications, including industrial automation, engineering test equipment, consumer electronics, automotive and medical applications. The device offers several internal voltage setting options that make it easy to configure for the desired output voltage range.