LM4128BMF-4.1/NOPB

Power management integrated circuits or PMICs are devices which are used to help manage the amount and flow of energy used in an electronic system. They can be used to provide a reference voltage, support a power supply, or provide over-voltage and over-current protection to an electronic system.

The LM4128BMF-4.1/NOPB is a voltage reference IC that is part of the category of PMICs suitable for many applications. It is a four terminal component, meaning pins 4 and 7 are low voltage levels and pins 5 and 6 are high voltage levels (VCC). It is also a bipolar component, meaning it has both P and N type transistors in its construction.

The LM4128BMF-4.1/NOPB requires an input voltage range of 4.75 to 21 volts and has a reference voltage of 4.1 volts by default. It has very good accuracy, linearity and low temperature sensor drift. Additionally, it has excellent thermal stability and high voltage ratings.

The main application fields for the LM4128BMF-4.1/NOPB are voltage references, voltage regulators, and output amplifier circuits. In voltage reference applications, the LM4128BMF-4.1/NOPB helps provide a stable and precisely controlled voltage reference level. It is most often used in power supply applications as a voltage reference, as it helps keep the output voltage constant by compensating for line drops or changes in load. In voltage regulator applications, the LM4128BMF-4.1/NOPB helps to keep the output voltage constant by filtering the input and providing a stable, predictable output voltage.

The LM4128BMF-4.1/NOPB works on the principle of a voltage reference. This type of voltage reference consists of a voltage divider circuit, where the voltage reference voltage is developed between resistors in the divider. The relationship between the input and output voltages is determined by the resistance ratio between the two resistors. The LM4128BMF-4.1/NOPB contains two internal bipolar transistors, one of which is the voltage reference, and the other serves as an amplifier.

The output voltage of the LM4128BMF-4.1/NOPB is 1.5 mV smaller than the reference voltage. This small offset helps to prevent any large output swings due to loading changes or line drops. The maximum current output of the LM4128BMF-4.1/NOPB is 100mA, which makes it a good choice for low current applications. Additionally, the LM4128BMF-4.1/NOPB has a temperature coefficient of 30ppm/°C, making it suitable for temperature compensation of circuits in the range of -50°C to +125°C.

The LM4128BMF-4.1/NOPB is a good choice for applications requiring a precise, stable voltage reference. Its wide voltage range and excellent temperature stability makes it suitable for use in a variety of applications. Its relative simplicity also makes it an ideal choice for low current applications.