LM4040C25QDBZRG4

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Power management integrated circuits (PMIC) are a class of integrated circuits (ICs) that offer dedicated, managed and efficient electrical power conversion to various electronic systems. PMIC provide a robust, reliable and cost-effective way of managing energy sources. In particular, PMIC such as LM4040C25QDBZRG4 are voltage references (VRs) that ensure precision accuracy and high output voltage stability.

About the LM4040C25QDBZRG4

The LM4040C25QDBZRG4 is a four-terminal precision voltage reference from Texas Instruments. It features a relatively low temperature coefficient of 3 ppm/°C maximum and a minimum specified output current of 10¯³ A. The device has an operating temperature range of -40°C to 125°C (TJ) and a high initial accuracy of ±0.5%. It is designed to provide a regulated output voltage of 2.5 V in multiple applications including system reference voltage and supply sequencing. It also provides design flexibility for new and existing applications.

Application Fields

The LM4040C25QDBZRG4 is mainly used in precision voltage reference applications such as System references, supply sequencing, temperature and/or supply monitoring, and communication systems. It is well suited for use in aerospace, automotive, communication systems, industrial, medical, meters, and military systems where accuracy and reliability are paramount.

• System references: This voltage reference provides a consistent reference voltage for system-level reference requirements. It ensures accuracy, stability and drift performance over temperature variation.
• Supply sequencing: The device provides a predictable responses to power-on, power-off and reset sequences by providing a consistent 2.5V reference output.
• Temperature/Supply Monitoring: The device helps monitor power supply/temperature levels and provides multiple protection features.
• Communication Systems: The device can be used in communication systems for signal integrity, jitter performance and system performance optimization.

Working Principle

The LM4040C25QDBZRG4 works on the principle of dynamic threshold voltage sensing. The device monitors and measures the output voltage and current levels and then automatically adjusts the output voltage to maintain precise accuracy over temperature and process variations. The device is able to achieve this precise voltage output in part due to its low temperature coefficient of 3ppm/°C maximum.

The LM4040C25QDBZRG4 is designed to provide a stable output voltage with minimal noise, even in severe conditions such as high ESD sensitivity and power supply transients. It has an excellent precision of ±0.5% initial accuracy, minimizing the number of external components required for operation. Moreover, the device is RoHS-compliant and offers an additional protection feature to improve system reliability.

Conclusion

The LM4040C25QDBZRG4 is a four-terminal precision voltage reference from Texas Instruments. It features a relatively low temperature coefficient of 3 ppm/°C maximum and a minimum specified output current of 10¯³ A. It is mainly used in precision voltage reference applications such as System references, supply sequencing, temperature and/or supply monitoring, and communication systems. It works on the principle of dynamic threshold voltage sensing, and can provide a stable output voltage with minimal noise, even in high ESD sensitivity and power supply transient conditions. The LM4040C25QDBZRG4 can be a useful PMIC to have in a system in order to ensure the desired accuracy, reliability and power optimization.

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