MAX873AESA+

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The MAX873AESA+ is a voltage reference in the power management integrated circuits (PMIC) field. It is a CMOS regulator that works with a nominal input voltage range from 1.7V up to 5.5V and a physical temperature range of -40C to 125C. The MAX873AESA+ operates over a wide load range of 0.5mA to 25mA, providing an accurate output voltage across temperature.

The MAX873AESA+ provides a regulated output voltage of 3.3V±0.3V with a load regulation of 0.1% for load currents up to 25mA. The device uses a precision voltage reference that allows it to maintain a very low output voltage variation across temperature and load. The MAX873AESA+ also features a fast transient response and low quiescent current of 12μA at maximum output current. In addition, it comes with integrated protection features such as thermal shutdown, under-voltage lockout, and current limit.

The working principle of the MAX873AESA+ is based on a voltage regulator topology. This topology consists of an active switch and a pass transistor, with either a resistor or Zener diode connected in series. The active switch senses the output voltage and compares it to a reference voltage. Depending on the output voltage, the active switch will control the pass transistor to supply a constant output voltage. This is how the MAX873AESA+ ensures an accurate output voltage across temperature and load.

The MAX873AESA+ is an ideal choice for applications that require a low-cost, low-power, and accurate voltage reference. It is suitable for use in portable products, drones, and automotive applications, as well as in embedded systems, consumer electronics, and batteries.

In summary, the MAX873AESA+ is a power management integrated circuit that belongs to the voltage reference category. It offers a range of features designed to maintain a stable, accurate output voltage across a wide range of temperature and load variations. Its simple working principle and easy implementation make it an ideal choice for many applications.

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