LM4050QCEM3X2.5/NOPB

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Power management integrated circuits (PMICs) are among the most important components of virtually any electronic device.voltage reference circuits are commonly used as a precise reference voltage source in mixed-signal systems.The LM4050QCEM3X2.5/NOPB device is a single output bandgap voltage reference.Its application field and working principle are described below.

Application Field

The LM4050QCEM3X2.5/NOPB is a temperature-stable voltage reference. It provides a precise, fixed, and accurate output voltage with excellent dynamic performance. The chip is available in two versions: a standard voltage (1.18V), and a low dropout voltage (2.5V).

The LM4050QCEM3X2.5/NOPB is suitable for a wide range of applications including power control and protection, consumer electronics, automotive, industrial and medical equipment, computer and peripheral, consumer Bluetooth, and communications systems. It can be used to measure precise voltage levels and to ensure precise regulation of power supply voltages.

Working Principle

The LM4050QCEM3X2.5/NOPB is an integrated circuit composed of three main blocks: a bandgap voltage reference, a voltage comparator, and a gain stage. The bandgap reference is a process where the chip compares a diode and transistor of known characteristics in order to generate a reference voltage. This reference voltage is unaffected by device variations due to manufacturing process and temperature fluctuations.

The bandgap reference is also used to compare a voltage divider network to give a digital control over the output voltage. This digital control ensures precise regulation of the output voltage. The voltage is compared by a voltage comparator, which is then amplified by a gain stage to produce a precise, stable output voltage.

Finally, the LM4050QCEM3X2.5/NOPB has several internal protections to protect against sudden voltage excursions. It also includes a thermal protection circuit that will shut down the output if the temperature exceeds the safe operating range. This ensures safe operation of the device.

In summary, the LM4050QCEM3X2.5/NOPB is a single output, bandgap voltage reference with excellent temperature stability and dynamic performance. Its wide range of application fields, precise regulation and protection features make it an ideal solution for many power management applications.

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