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AP139-25WG-7 Application Field and Working Principle

The AP139-25WG-7 is a linear voltage regulator developed by Anpec Electronics Corp for use with applications requiring a constant voltage output. It is a high efficiency, ultra-low-dropout linear voltage regulator that can provide up to 1.5A of load current. It is suitable for powering a variety of applications including microcontrollers, digital power supplies, motor control systems, and other low-power electronics.

Applications

• Microcontrollers
• Digital power supplies
• Motor control systems
• Low-power electronics

Working Principle

At the heart of the AP139-25WG-7 voltage regulator is a voltage reference circuit that is used to compare the input voltage with the voltage output by the regulator. The difference between the two values is the error signal, which is then used to generate an output voltage that is proportional to the error signal. The output voltage is then regulated using a pulse width modulation (PWM) technique, which is based on a comparator oscillating between two voltage levels to generate a fixed output. The output voltage is set by adjusting the duty cycle of the PWM signal.

The AP139-25WG-7 voltage regulator also includes a thermal overload protection circuit that limits the output current in the event of a fault or an overload. This feature helps to protect the regulator from damage due to excessive current draw. Additionally, the voltage regulator includes an adjustable output voltage and an enable/disable pin. The adjustable output can be used to set the output voltage to meet the needs of the application.

Conclusion

The AP139-25WG-7 is a high efficiency, ultra-low-dropout linear voltage regulator developed by Anpec Electronics Corp. It is suitable for use with applications requiring a constant voltage output, making it suitable for a variety of applications including microcontrollers, digital power supplies, motor control systems, and other low-power electronics. The regulator includes thermal protection circuitry and an adjustable voltage output, making it easy to set the output voltage to match the needs of the application.

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