LM4132AMFX-2.5/NOPB

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction to Voltage Reference

Voltage reference is an electronic circuit used to provide a standard voltage compared to a specific reference voltage. It functions as a voltage source that emits a constant voltage irrespective of the changes in its output current or load resistance. It is used to ensure consistent power in a system by precisely regulating the output voltage regardless of current and load variations. The voltage reference can generate a stable output voltage over a broad temperature range.

LM4132AMFX-2.5/NOPB Application Field and Working Principle

The LM4132AMFX-2.5/NOPB is a fixed output Low-Dropout (LDO) voltage regulator which has very low dropout (V_dropout) voltage and low quiescent current. It has recently improved to match the demand of most consumer devices. The LM4132AMFX-2.5/NOPB has an output voltage of 2.5V and is able to provide 500mA of current. It is a monolithic three-terminal circuit and provides a stabilized output voltage. The device includes an on-chip current sense amplifier and an adjustable voltage comparator with hysteresis. The LM4132AMFX-2.5/NOPB acts as a power supply for many consumer applications such as PDAs, mobile phones and digital cameras.

The working principle of the LM4132AMFX-2.5/NOPB voltage reference is based on the principle of a series voltage regulator, which consists of a control element, power switch, an output series resistor and an output capacitor. The control element takes the form of an error amplifier and this compares the actual voltage at the output with an internal reference voltage. When the error amplifier detects a difference between the two, it provides a control signal to the power switch to adjust the current and maintain the output voltage at the preset level. The output voltage is set by connecting a resistive divider between the output and the reference terminal of the error amplifier.

The reference voltage is maintained +/ 1 mV across the entire temperature range (from -40°C to +125°C). Furthermore, the device offers a very low output noise voltage as well as stringent line regulation. As such, it is beneficial for applications that require a precise power supply such as PLLs, CPU core supplies, and other data converters.

Conclusion

The LM4132AMFX-2.5/NOPB offers a robust, high performance and precise voltage reference, which makes it ideal for applications that require a precise supply across a wide range of temperatures. The device has a low dropout voltage and low quiescent current, making it suitable for portable applications and more. The LM4132AMFX-2.5/NOPB also includes an error amplifier, current sense amplifier and voltage comparator. By working together these components maintain a precise output voltage for varying sources of input power.

The specific data is subject to PDF, and the above content is for reference