TL1431CDG4

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TL1431CDG4 is a monolithic, low power, normally-on voltage reference that can be used in portable applications such as liquid crystal displays, computer peripherals, power management and analog-to-digital converters. The device contains a temperature compensated, high accuracy reference source and active circuitry to provide a voltage reference with very low power consumption. The TL1431CDG4 operates over a wide input voltage range of 2.6V to 12V and provides a stable, low temperature coefficient reference voltage of 1.241V.

TL1431CDG4 is classified as a type of PMIC—Voltage Reference, since it provides a stable and accurate reference voltage when other power sources may not. This low power voltage reference provides active voltage regulation and temperature compensated reference in a low cost, size-efficient package. It can also be used to provide a stable voltage output load even when the input voltage is changing or varying, as long as it remains within the specified input voltage range.

The operating principle of the TL1431CDG4 is quite simple. The device contains a temperature compensated, high accuracy reference source and active circuitry to provide a voltage reference with very low power consumption. The reference voltage, which is around 1.241V, is developed by the TL1431CDG4, which regulates the output voltage through an internal control circuit. The internal control circuit is programmed to maintain a constant voltage output, even when the input voltage is varying or changing; this is achieved through a combination of electronic components including resistors, capacitors, and active circuitry.

Within the TL1431CDG4’s active circuit, the internal control circuit acts as a compare-and-control device. The control circuit compares the voltage at the device’s output to the reference voltage and then takes corrective measures to achieve the desired output voltage. Depending on the difference between the reference voltage and the output voltage, the control circuit adjusts the internal circuitry to correct the voltage deviation by adding or subtracting a certain amount of current. This produces an output voltage that is within the temperature compensation range of the device.

In summary, the TL1431CDG4 is a monolithic, low power voltage reference used mainly in portable applications, as it provides a stable and accurate reference voltage when other power sources may not. This low power voltage reference provides active voltage regulation and temperature compensated reference in a low cost, size-efficient package. Additionally, the control circuit within the active circuit is programmed to maintain a constant voltage output, even when the input voltage is varying or is changed, as long as it remains within the specified input voltage range.

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