AP130-28RL-7

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The AP130-28RL-7 is a linear voltage regulator module developed by Assmann WSW Components. The device provides an adjustable, monolithic power supply solution for a wide range which includes microprocessor and DSP systems. It is specialized in providing high quality output voltages with low ripple and low noise. It also offers low drop-out characteristics, excellent output regulation and transient response, and thermal and overvoltage protection. In addition, the device is available in a range of packages for easy integration into a variety of applications.

Applications

• Microprocessor and DSP systems
• Interface and Communication System in Automotive
• Portable/Handheld Electronic devices
• Point-Of-Sale equipment
• Office Automation
• Medical Equipment

Features

• Output Voltage Range: 0~125V
• Output Current: 1A (Default)
• Efficiency: 93%
• Line Regulation: 0.02%
• Load Regulation: 0.01%
• Temperature Range: -40 to +85°C
• Overvoltage Protection: 125V
• Undervoltage Protection: 8V
• Ripple/Noise: <100mV
• Dropout Voltage: 0.45V (Typical)

Working Principle

The device achieves an adjustable, monolithic power supply solution by integrating voltage references, error amplifiers, resistors and a pass transistor into a single module.

The principles of operation begin with a voltage reference which provides a precise, stable reference voltage. The reference voltage is compared with the output voltage via an error amplifier. The error amplifier subtracts the reference voltage from the output voltage, creating an error signal. This error signal is then compared to a current reference connected to a digital potentiometer. The resulting signal is used to adjust the gate voltage of the pass transistor, which sets the voltage across the load.

Additionally, the module provides protection features to protect the reference voltage, error amplifier, and pass transistor from voltage transients, overvoltage, undervoltage, and overheating. These protections are built into the device and can be set with an external resistor.

Conclusion

The AP130-28RL-7 is a linear voltage regulator module developed by Assmann WSW Components. It is a high quality and reliable device for providing adjustable, monolithic power solutions for microprocessor and DSP systems. The module offers excellent output regulation, low dropout voltage, low ripple and noise, and thermal and overvoltage protection. In addition to its impressive features, the module is available in a range of packages making it easy to integrate into a variety of applications.

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