PMIC - Voltage Reference

LM4041EIZ-1.2/NOPB is a voltage reference PMIC which is used in a variety of applications. It is a three terminal, low power dissipative device that operates from 1.2V to 36V. It features a wide range of temperature performance and low cost.

Application Field

LM4041EIZ-1.2/NOPB is an ideal voltage reference solution for a variety of applications due to its wide range of temperature performance, stability, low power operation, and low cost. The device is ideal for use in battery-powered systems, such as cellular phones, PDAs, cordless phones, and other portable and hand-held devices, as well as any other application requiring either a low voltage and low power reference or a high-temperature stability reference.

LM4041EIZ-1.2/NOPB can also be used in automotive and computer applications. Its low power operation and wide range performance makes it ideal for use in supply voltage tracking or process control, or pulse-width modulation (PWM) applications.

Working Principle

The LM4041EIZ-1.2/NOPB voltage reference works by converting a current input into a voltage output. The device uses a variety of mismatching resistors to create a voltage reference that is more stable with respect to temperature than a zener diode-based device. The device also utilizes a current limiting feature that helps in maintaining the desired output voltage even in the case of large input current variations.

When the device is powered up, an internal current flows through the reference output pin and the resistive elements connected to the reference output pin. This current is divided among the different resistive elements, which then determine the voltage of the reference voltage. The device also has an adjustable resistor which allows the user to adjust the reference voltage as required.

Since the reference voltage is independent of the power supply voltage, the device can be used as a precision voltage reference in a variety of systems. The device is also designed to be immune to input transients and spikes, and can provide excellent long-term stability.

Conclusion

The LM4041EIZ-1.2/NOPB is a low power, low cost voltage reference PMIC which is suitable for a variety of applications. Its wide range performance and temperature performance makes it ideal for use in battery-powered systems, automotive and computer applications, and any other application requiring an accurate and stable voltage reference. The device also has adjustable resistors for adjusting the reference voltage as well as a current limiting feature for improved performance.