TL431CDMR2G

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The TL431CDMR2G is a current-regulated voltage reference diode that is routinely used in power management integrated circuits (PMICs) for voltage reference applications. It is widely used in many consumer electronics, computer, and industrial applications. The TL431CDMR2G is a three-terminal adjustable shunt regulator with laser trimmed integrated circuit technology for precise adjustment. The device is designed to provide a precise voltage reference with very low temperature coefficient.

The TL431CDMR2G device consists of an integrated circuit (IC) chip connected to two output pins, each of which can be connected to either a positive or a negative voltage. The output pins are referred to as “program” pins. The built-in precision voltage reference provides a precise voltage set point via the program pins. The TL431CDMR2G is available in a variety of power options ranging from 1W to 8Watts.

The working principle of the TL431CDMR2G is based on a current-switch. The integrated circuit contains an internal current switch and three on-chip resistors to form a voltage regulator. The current switch is used to regulate a feedback voltage to maintain a set voltage on the output pins. This feedback voltage adjustment is used to maintain the output voltage at a precise value. The current switch is connected in series with the two on-chip resistors, forming two series resistances and a parallel path which controls the voltage regulation of the output pins.

The TL431CDMR2G also features a temperature-compensated current limiter. This limits the output current that can be drawn from the output pins. This limits the voltage excursions that can occur during periods of increased load or variable current demands. In addition, the device includes an overtemperature monitor which will automatically reduce the output current should the device temperature rise above a preset limit.

The TL431CDMR2G can be readily used as a voltage reference in digital power management devices, including switching regulators, DC-DC converters, digital-to-analog converters (DACs), and motor controllers. It has been tested and verified to provide a precise voltage reference with very low temperature coefficient and suitable current limiting capabilities. The device is also suitable for use in power management applications such as battery management, power supply monitoring, voltage regulators, and over temperature protection.

The TL431CDMR2G is a versatile device and is composed of simple, yet effective components. This makes it an ideal choice for use as a voltage reference in a variety of applications. Its low cost, precise voltage reference, and current limiting are very attractive to PMIC designers looking for a precise and low-cost solution for their design needs. Furthermore, its suitable current limiting features provide a high level of protection for sensitive components in power management circuits.

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