LM4128DQ1MF3.3/NOPB

LM4128DQ1MF3.3/NOPB has a wide range of features and benefits. First, its input voltage range is from 2.3V up to 18V, and output voltage range can be adjusted from 1.22V up to 3.3V, with a high accuracy of 0.5%. In addition, it is highly power-efficient with a typical quiescent current of only 4mA. Furthermore, its maximum output current up to 400mA and its minimum dropout voltage is only 150mV (typical) @ 300mA, making it ideal for a variety of applications. Last but not least, it has excellent temperature stability, with a temperature coefficient of only 25ppm/oC (for output voltage tracking over temperature range of -40 oC to +85 oC). This makes it suitable for use in extreme temperature environments with less concern of system reliability.

LM4128DQ1MF3.3/NOPB is suitable for a variety of applications due to its high accuracy, power efficiency, and stability features. It is commonly used in power management and energy management systems as shunt regulators, controlling constant output voltage or current. It can also be used in portable electronics and various embedded systems, such as cell phones and PDAs, since its low power consumption allows for extended run times and longer battery life. The wide input voltage range and adjustable output voltage range also make it suitable for applications where the input voltage must be switched between different voltages with a tight load regulation requirement.

The working principle of LM4128DQ1MF3.3/NOPB is based on a series of linear regulator circuits, with the series pass element, a voltage detector, and a current limiter. The series pass element, normally a transistor, is connected between the Input supply line and the Output load line, so that the required output voltage can be set using the on-chip voltage divider circuit. The voltage detector senses the output voltage and the current limiter limits the output current to the specified range to avoid the overload. The voltage detector also provides short-circuit protection by detecting the short-circuit current. In this way, LM4128DQ1MF3.3/NOPB can achieve an adjustable, precise output voltage with a wide input supply range and high efficiency at low dropout voltage.

In conclusion, LM4128DQ1MF3.3/NOPB is a power management IC (PMIC) voltage reference, which is well-suited for a variety of applications due to its wide input voltage range, adjustable output voltage range, high accuracy, power efficiency, and stability. It worksbased on a series of linear regulator circuits, with the series pass element, a voltage detector, and a current limiter, to provide an adjustable and precise output voltage with a wide input supply range and high efficiency at low dropout voltage.