TLV431BQDCKR

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PMIC - Voltage Reference

The TLV431BQDCKR is an adjustable and programmable four-terminal shunt regulator-based integrated circuit capable of providing a relatively precise output voltage regardless of variations in the input voltage or temperature. It is available in an array of surface-mount packages, and offers a wide range of output voltage flexibility (1.2 V - 18 V) for battery-backed power supplies. This integrated circuit is ideal for use as a low-cost programmable reference in systems required to provide a very precise output voltage under changing input, load, and temperature conditions.

Application Field

The TLV431BQDCKR finds a lot of applications in power supplies, switch mode and battery-backed voltage regulators, and integrated motor controllers. It is also used to regulate the power output in many different types of devices like TVs, computers, and cars, as it allows for reliability, high efficiency, and over-load protection. As this integrated circuit features a wide range of voltage regulation, the TLV431BQDCKR supports a variety of applications from low power to high power. Additionally, its low component count (just four pins) and stable characteristics make it a preferred solution for changing a range of voltages.

Construct and Working Principle

The TLV431BQDCKR is based on a shunt regulator design, meaning that it is a voltage regulator that contains a four-terminal circuit element across which a stable voltage is applied, but the load or output current is passed through a different part of the circuit. This four-terminal component is based on the bandgap reference voltage developed by the TLV431 shunt regulator circuit, which has the cathode connected to ground, and the current is returned to the source through an internal resistor from the anode. The TLV431 circuit is also connected to a voltage divider, which is composed of two resistors, to sense the output voltage. When the output voltage is greater than the internal reference voltage, the device draws current from the voltage divider, whose voltage drop will decrease the output voltage in the process.

The TLV431BQDCKR offers advantages in meeting the demands in a cost-effective, easy to use, and compact manner. It features a wide range for input voltage and temperature stability as certain circuits are designed to operate within a certain range, and the TLV431BQDCKR has the capability of delivering a consistent output voltage regardless of variations in temperature or input voltage. Additionally, it is user-programmable, which provides the user with the flexibility to select the desired output voltage up to 18V, while still maintaining a stable output.

This four-terminal shunt regulator integrated circuit continues to fill a role in many application fields, providing an adjustable and programmable voltage reference. Its wide range of output voltage flexibility, easy to use and cost effective nature, low component count, and temperature and voltage stability provide a cost effective and reliable solution for many system requirements.

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