MAX881REUB+

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MAX881REUB+ Application Field and Working Principle

MAX881REUB+ are professional, high-performance special purpose voltage regulators manufactured by Maxim Integrated. They are designed to meet a variety of advanced electrical parameters and output current requirements. Thanks to their unique features, MAX881REUB+ are perfect for applications such as mixed mode analog-to-digital converters (ADCs), voltage-controlled oscillators (VCOs), and current-sensing microcontrollers.

Application Fields

MAX881REUB+ voltage regulators can be employed in a variety of industries and applications, including:

• Power management applications
• Automotive standards compliance
• Microcontroller- and sensor-based monitoring systems
• Low power radio frequency (RF) transmitters/receivers
• Industrial process control

Features

The MAX881REUB+ voltage regulator possesses several features that aid its usability in various applications:

• Compact form factor—This small 3-pin SOT package is ideal for fitting into compact industrial designs
• High-efficiency performance—The MAX881REUB+ has a high maximum power conversion efficiency of up to 98%, making it suitable for applications with rigorous power constraints
• Wide voltage range—The regulator is designed to run over a wide input voltage range of 4-30V, meaning it is suitable for many variable power input applications
• Integrated Fault Protection—The MAX881REUB+ provides built-in overvoltage, overtemperature, and overcurrent protection, making it much more reliable and safe
• No additional components—In many cases, the MAX881REUB+ can be used with no other components, making it perfect for tight spaces

Working Principle

The MAX881REUB+ voltage regulator consists of several components: the internal control circuitry, an output transistor, an error amplifier, and a feedback control loop. The error amplifier monitors the output voltage and adjusts the internal control circuitry to maintain the desired voltage level. The control circuitry regulates the output voltage via a built-in power MOSFET transistor, which can be programmed for different output voltage levels and current limits. The feedback loop ensures that the voltage remains within the programmed range. The MAX881REUB+ also needs an external capacitor in order to stabilize the output voltage.

In addition, the MAX881REUB+ contains a variety of peripheral components that provide added protection and improved performance. These include overvoltage protection (OVP) to prevent hazardous voltage surges, and overcurrent protection (OCP) to prevent sudden and dangerous spikes in current. They also include ESD protection, as well as thermal protection, which helps prevent dangerous over-temperature events.

Conclusion

The MAX881REUB+ voltage regulator is a high-performance, versatile solution for a range of power management applications. Its integrated fault protection, wide voltage range, and impressive power conversion efficiency help increase system reliability and simplify design. Furthermore, its small 3-pin SOT package makes it perfect for fitting into tight spaces. As a result, the MAX881REUB+ is an ideal choice for advanced power management requirements.

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