LM4040AIZ-2.5/NOPB

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Power management integrated circuits (PMICs) are integrated circuits that manage the power generated by components such as batteries and electrical motor controllers. Voltage references are one type of PMIC that keep a steady output voltage regardless of whether the external power supply or load conditions change, and the LM4040AIZ-2.5/NOPB is a popular example. This document will explain the LM4040AIZ-2.5/NOPB application field and working principle.

LMI4040AIZ-2.5/NOPB Overview

The LM4040AIZ-2.5/NOPB is a low-power, 200mV precision voltage reference, typically used in systems powered by a battery. It offers excellent temperature stability and low resistance over a temperature range of -40°C to +125°C. The output current is guaranteed to be less than 5mA. The LM4040AIZ-2.5/NOPB is available in a wide variety of packages including SOT-23, SC-70, SOT-223, TO-226 and SOT-89 and is lead-free and RoHS compliant.

Application Fields

The LM4040AIZ-2.5/NOPB is most frequently used in battery-powered consumer and medical electronic products, such as portable comput-ers, digital cameras, camcorders, medical imaging, and voltage reference for analog-to-digital converters. It is also used in l ow power and low voltage supply systems such as 0.9V digital logic and 3V flash memory supply, as well as audio and video playback equipments.

Working Principle

The LM4040AIZ-2.5/NOPB uses a band-gap voltage reference topology to generate a stable, temperature-compensated output voltage. It converts a fraction of the output voltage to a reference level and then adjusts the output voltage. When the output voltage drops, a feedback loop adjusts the reference voltage to maintain a stable output. This allows the output voltage to remain constant over a range of temperatures.

The LM4040AIZ-2.5/NOPB utilizes a number of protection circuits for high-temperature, overload and reverse current conditions. A thermal shutdown circuit allows the output voltage to remain stable under extreme operating conditions. In addition, the device’s low power consumption allows for applications in battery powered products.

Conclusion

The LM4040AIZ-2.5/NOPB is a low-power, 200mV precision voltage reference designed for use in battery-powered consumer and medical electronics. It offers excellent temperature stability and low resistance. It is available in several popular packages and is lead-free and RoHS compliant. The LM4040AIZ-2.5/NOPB uses a band-gap voltage reference topology to generate a stable, temperature-compensated output voltage and includes protection circuits for high-temperature, overload and reverse current conditions.

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