TLV431BQDBVRE4

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The TLV431BQDBVRE4 is a specialized integrated circuit (IC) in the family of precision 2.5V voltage regulators by Texas Instruments, commonly used in power management applications. It provides a precise 2.5V output voltage and can also be used as a precision reference for a wide range of applications. This device is part of the PMIC (Power Management IC) - Voltage Reference family, which includes several types of voltage regulators and similar devices that provide a reference output voltage for any analog circuit such as a voltage divider or a shunt regulator. The TLV431BQDBVRE4 is suitable for applications requiring the maximum output current of 20mA.

Features:

• Broad input voltage range: 2.7V to 16V
• Provides a precise 2.5V output voltage
• Max output current of 20mA
• No external components required
• Low temperature coefficient
• Tight line and load regulation

Application:

The TLV431BQDBVRE4 is well suited for a wide range of PMIC applications including:

• Battery powered systems
• Low voltage processor system
• Communication systems
• Data acquisition systems
• Instrumentation systems
• Sensors and transceivers

Working Principle:

The TLV431BQDBVRE4 is based on a bandgap reference architecture. The bandgap reference uses a combination of two voltage sources to produce an output voltage that is relatively independent of temperature and power supply variations. The first voltage source is based on a combination of a bipolar transistor, a differential amplifier and a Zener diode. The bipolar transistor produces a base-emitter voltage (Vbe) that is temperature dependent. The Zener diode produces a Zener voltage that is dependent on the processing of the active elements and the second voltage source is the temperature compensated voltage (Vref) produced from the combination of a bandgap reference circuit, an operational amplifier (OP Amp) and two resistors. By combining these two voltage sources, the output voltage (Vout) of the TLV431BQDBVRE4 is a precise 2.5V reference maintained with a minimum accuracy of 3%.

Conclusion:

In conclusion, the TLV431BQDBVRE4 is a powerful and versatile voltage reference device with a precise 2.5V output voltage and no need for external components. It is well suited to a wide range of applications including battery powered systems, low voltage processor systems, communication systems, data acquisition systems, instrumentation systems, sensors and transceivers. The device is part of the PMIC - Voltage Reference family, and works on a bandgap reference architecture to provide a highly accurate reference voltage source.

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