LM4128CQ1MF2.5/NOPB

Power management ICs (PMICs) are integral components of modern electronic systems such as computers and smartphones. Voltage references are specialized versions of PMICs that are used to provide exact and consistent voltage references for voltage control and measurement purposes. The LM4128CQ1MF2.5/NOPB is a precision voltage reference designed for applications where accuracy, low noise and long-term stability are key requirements.

Function

The LM4128CQ1MF2.5/NOPB voltage reference is a low-noise, low-power device designed for precision applications. It is capable of providing a precise and stable output voltage of 2.5V, with a temperature coefficient of only 0.3mV/°C. The device is also equipped with a reference output disable capability, allowing the output voltage to be switched off when not in use. The output voltage is independently adjustable, allowing the user to customize the output voltage to suit their specific application.

Application Field

The LM4128CQ1MF2.5/NOPB can be used in a wide range of applications, including:

• Precision voltage regulation
• ADC/DAC reference voltages
• Power supplies and voltage converters
• Closed-loop current sources and converters
• Battery-powered systems

The device is also suitable for use in automotive applications. It is designed to operate over a wide temperature range of -40°C to +125°C and is also RoHS compliant.

Working Principle

The LM4128CQ1MF2.5/NOPB is a voltage reference device which uses a series of components to produce a stable output voltage of 2.5V. It is comprised of two differential amplifiers, an output buffer, a voltage-setting resistor and a trim element. The two differential amplifiers act as voltage followers and provide the gain for the device. The output buffer acts as an interface between the device and the load, providing buffered output voltage to the load.

The voltage-setting resistor consists of two resistors in series. The trim element can be used to adjust the voltage setting resistor’s output voltage in order to set the precise output voltage of the device. The combination of these components allows the LM4128CQ1MF2.5/NOPB to provide precise and stable output voltages with low noise. The device also features an output disable capability, allowing the output voltage to be switched off when not in use.

In summary, the LM4128CQ1MF2.5/NOPB is a precision voltage reference with low noise and long-term stability. It is suitable for a wide range of applications, including voltage regulation and ADC/DAC reference voltages. The device is also RoHS compliant and capable of operating over an extended temperature range of -40°C to +125°C.