ADM1172-1AUJZ-RL7

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PMIC (Power Management Integrated Circuit) are an important type of integrated circuit dedicated to controlling the power supply of a number of other components. One subtype of PMIC is hot swap controllers, which are used to protect and regulate components in hot swap applications. A popular example of a hot swap controller is the ADM1172-1AUJZ-RL7. Knowing its application fields and working principles is essential to making the most out of this powerful IC.

The ADM1172-1AUJZ-RL7 is a Hot Swap controller from Analog Devices. It is designed for use in a broad range of applications, including data center hot-swappable power systems, industrial converters, and consumer electronics. It has advanced features such as adjustable under-voltage lockout, adjustable over-voltage protection, and current-limited source control. Thanks to these features, it is well-suited for controlling high-current power supplies, and it offers high efficiency, low-power operation, and high accuracy.

The ADM1172-1AUJZ-RL7 is based on a current-limited buck topology and includes four integrated power MOSFETs along with built-in linear regulation and power sequencing capability. It also has a wide range of operating temperature and voltage, making it ideal for various demanding applications. Additionally, it has fast response times and a low on-resistance of 80mΩ for low-voltage drop in high-current circuits.

The device’s working principle is complex but straightforward. The chip senses the input terminal voltage, compares it to the internal reference voltage, and turns the output power supply on or off accordingly. When the voltage reaches the upper threshold, the chip turns off the power supply and when the voltage falls below the lower threshold, the chip turns on the power supply. The chip also monitors the load current, and when the current exceeds the internal preset limit, the chip turns off the power supply until it is reset.

The ADM1172-1AUJZ-RL7 is a great choice for hot swap controllers thanks to its wide range of features and reliability. It is suitable for a variety of applications, including high-current power supplies, power sequencing, and hot-swapping. It is also reliable, efficient, and precise when controlling power supplies and loads.

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