MN13821TP

PMIC (Power Management IC) or Supervisors have become common not just in consumer electronics but in many of today\'s cutting edge industrial, medical, and transportation applications. One of the most popular PMICs on the market today is the MN13821TP series by ON Semiconductor. This Power Management IC is designed for supervisory control over battery-powered A/D converters, and also for voltage detection and over-voltage protection in a variety of industrial, medical, and consumer applications. This article will cover the application field and working principle of the power management IC series.

Application Field

The MN13821TP Power Management IC is designed for portable, handheld devices, such as digital cameras, camcorders, portable media players, and more. It has a wide operating temperature range of -40 °C to 85 °C, so it can also be used in automotive, industrial, telecom, and medical applications. It is also used in consumer electronics as it can be connected to 5V, 3V or 2V batteries, allowing it to detect voltage drop and provide overvoltage protection. In addition, it provides battery monitoring, battery charging and discharge control, and other power-saving functions necessary for battery-powered A/D converters.

Working Principle

The MN13821TP Power Management IC is a low-noise chip that provides low drop-out voltage control with adjustable thresholds. The device contains a voltage sense circuit and associated regulation block. The voltage sense circuit helps to detect the input and output voltages and provide diagnostics. The regulation block provides features such as setting monitoring voltages, turn off threshold voltage setting and over voltage threshold setting. It also provides short circuit protection and over-current protection.

The MN13821TP Power Management IC is designed for power-saving, with a low quiescent current (IQ), and shutdown mode. The device will enter into shutdown mode when no voltage is detected. This reduces the overall system power consumption significantly, while maintaining superior over-voltage protection.

The device also includes a high-accuracy reference (3.3V output), and an adjustable voltage detector, with input voltage range of 6V to 18V. The gain of the regulator can be adjusted with external resistors. This makes it easy to adjust the accuracy of the device and the voltage detection range.

Conclusion

The MN13821TP Power Management IC series is a versatile and robust PMIC solution for a variety of applications. It provides low-noise voltage control and low dropout voltage with adjustable thresholds. Its battery monitoring and charging features, as well as short-circuit protection, make it ideal for a wide range of industrial, medical, and consumer applications.