TLV431AQDBVRQ1

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Voltage references are electronic components that can precisely define a voltage level independently of current, temperature and other external parameters. TLV431AQDBVRQ1 is a three-terminal, adjustable, programmable voltage reference device that is voltage controlled. The output voltage is set by an external resistor and can provide a voltage between 1.3V and 26V. This makes it ideal for various applications.

TLV431AQDBVRQ1 Features

The TLV431AQDBVRQ1 contains several features that make it suitable for many applications. These features are:

• Low supply current of < 15µA
• Very low quiescent current
• High output accuracy of ±0.2% maximum
• Panel-mount and surface-mount packages are available
• Operating input voltage range of 2.5V to 26.5V
• High temperature operation of –40°C to +85°C

The TLV431AQDBVRQ1 is ideal for applications such as battery-powered circuits, isolated circuits, portable test equipment, and low-power laboratory equipment.

TLV431AQDBVRQ1 Application Field and Working Principle

The TLV431AQDBVRQ1 is used as a voltage reference in many applications. The main application fields for the TLV431AQDBVRQ1 are:

• Analog-to-digital and digital-to-analog converters
• Industrial process control
• Automotive applications
• Power supplies

The working principle of the TLV431AQDBVRQ1 is based on a band-gap reference and precision amplifier circuitry. The band-gap reference is used to set the maximum and minimum output voltage by minimizing the device’s dependence on temperature and other external parameters. The device uses differential amplifiers with high gain and low drift to compare the regulated output voltage to the reference voltage. The voltage differential between the two is sensed and the control loop is used to adjust the output level.

The TLV431AQDBVRQ1 also features protection circuitry, which limits short circuit and overvoltage conditions. The protection circuitry can also be bypassed via an internal switch when the device is used in low-power applications.

Conclusion

The TLV431AQDBVRQ1 is a three-terminal, adjustable, programmable voltage reference device. It is ideal for many different applications such as battery-powered circuits, isolated circuits, portable test equipment, and low-power laboratory equipment. It is capable of providing an output range of 1.3V to 26V, has very low quiescent current and supply current, and has excellent stability and accuracy. The device also offers protection circuitry to limit exposure to overvoltage and short circuit conditions.

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