LM4041QDIM3-1.2/NO Integrated Circuits (ICs)

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PMIC - Voltage Reference

A voltage reference is an IC that provides a constant reference voltage over a range of operating conditions. It is essential for maintaining accuracy and stability in DC voltage measurements. The LM4041QDIM3-1.2/NO is a precision micropower voltage reference from Texas Instruments.

Description

The LM4041QDIM3-1.2/NO is a micropower low-dropout 4.096V precision voltage reference. The device features an input voltage range of 1.2V to 5.5V and is available in the an SOT-23-6 package. It also has an operating current of only 1.7µA and an excellent temperature coefficient of 10ppm/°C. The device is capable of providing output voltage accuracy and stability over a wide range of ambient temperatures and input voltages.

Features and Benefits

• Low-dropout voltage of only 350mV for 4mA operation
• 4.096V temperature-stable output voltage accuracy at ±1.0mV
• Operating current of only 1.7μA
• Input voltage range from 1.2V to 5.5V
• Excellent temperature coefficient of 10ppm/°C
• Excellent PSRR specifications
• Low pressure-sensitivity of 75ppm/kPa
• High precision references available in SOT-23-6 package

Applications

The LM4041QDIM3-1.2/NO is suitable for a wide range of applications including monitoring and control systems, precision current-measuring devices and portable equipment powered by single-cell batteries. The low dropout voltage and low dropout voltage allows the device to be used in applications where power consumption and space are both critical factors.

Working Principle

The LM4041QDIM3-1.2/NO operates on the principle of temperature-compensated Zener diode. The device consists of a temperature-compensated Zener diode in series with a N-channel pass device and a precision current mirror. The reference voltage is established by the Zener diode, and the current mirror helps to minimize the effect of temperature on the Zener voltage. The N-channel pass device provides a low turn-on voltage and a low-dropout voltage to ensure stable operation over a wide range of input supply voltages.

Conclusion

The LM4041QDIM3-1.2/NO is an ideal solution for applications requiring low-power and high precision voltage reference. The device features an excellent temperature coefficient of 10ppm/°C and a PSRR over a wide range of input voltages. It is available in a SOT-23-6 package, and its low-dropout voltage and current draw make it suitable for use in portable and power-sensitive applications.

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