TL431CDBZTG4

PMIC - Voltage Reference plays a key role in the electronic industry, helping to control the output voltage of an electronic system or stabilize the input voltage of the system. TL431CDBZTG4 is a popular voltage reference IC designed and manufactured by Texas Instruments, and its application fields and working principles are described in this article.

The TL431CDBZTG4 is a three-terminal adjustable precision low drift voltage regulator. It is mainly applied in switching power adapters, switching AC/DC converters, motor drives, digital electronics and power supply control. It\'s main features include s open-loop voltage regulation, minimum external parts, adjustable output voltage range of 2.495V to 36V, operating junction temperature range from -40℃ to125℃, and low VOS tolerance from 0.5% typical to 1.5%. Apart from having excellent performance, the TL431CDBZTG4 is also cost effective.

Regarding its working principle, the TL431CDBZTG4 is an adjustable voltage regulator circuit. It is formed by an integrated circuit, a large capacitor and two resistors at two ends. The two ends of the resistors are connected to the positive and negative sides of the power supply, and the middle of the two resistors is connected to the output terminal. The large capacitance is connected between the negative side of the power supply and the output end to filter noise.When the output voltage of the circuit is too high, that\'s when the CDBZTG4 IC takes action and starts to control the output voltage. When the integrated circuit detects the voltage is too high, it will turn on the PMOS transistor in the output side, and when the output voltage drops to below its voltage threshold, the IC will turn off the PMOS transistor.

In summary, the TL431CDBZTG4 is an adjustable precision low drift voltage regulator IC, with its application fields mainly used in switching power adapters, switching AC/DC converters, motor drives, digital electronics and power supply control. Its working principle relies on the PMOS transistor to turn on and off to control the output voltage of the circuit. The TL431CDBZTG4 is both cost effective and reliable, making it a preferred choice for many electronic engineers.