TLV431BQPKG3

Noise - 0.1Hz to 10Hz:	--
Base Part Number:	TLV431B
Supplier Device Package:	SOT-89-3
Package / Case:	TO-243AA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TA)
Current - Cathode:	100µA
Current - Supply:	--
Voltage - Input:	--
Noise - 10Hz to 10kHz:	--
Series:	--
Temperature Coefficient:	--
Tolerance:	±0.5%
Current - Output:	15mA
Voltage - Output (Max):	6V
Voltage - Output (Min/Fixed):	1.24V
Output Type:	Adjustable
Reference Type:	Shunt
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The TLV431BQPKG3 is an adjustable precision zener diode based reference voltage that can offer a range of voltage levels. It is a popular voltage reference and is used in a range of application fields, particularly in power management integrated circuit (PMIC) applications. This article looks at the TLV431BQPKG3 application field and working principle and how it is suitable for PMIC applications.

TLV431BQPKG3 Application Field and Working Principle

The TLV431BQPKG3 is a three-terminal, adjustable shunt regulator from Texas Instruments. It is a precision zener diode based adjustable reference voltage circuit offered in three packages (SOT23, SOT-223, and SC70).This voltage reference is designed for electronic applications. It is most commonly used in applications where a precise output of regulated DC voltage is required. It is also suitable for noise-sensitive voltage regulation and single-cell battery-powered systems relying on precision voltage regulation.The device has three terminals: cathode (K), anode (A) and adjustment (ADJ). The cathode terminal is the input of the voltage, while the anode terminal is the output. The adjustment terminal is the connection point to adjust the output voltage.The TLV431BQPKG3 is a shunt regulator, meaning it uses a zener diode to dissipate the excess current that is not required to maintain its output voltage. This is done by connecting the reference voltage adjuster resistor to the ADJ pin of the IC. When there is an increase in the voltage at the cathode terminal, a corresponding current flows from the cathode to the anode terminal. This causes a voltage drop across the diode which causes a reduction in the total output voltage.The output voltage can also be adjusted by changing the value of the reference voltage adjuster resistor. This can be done using a digital to analog (D/A) converter or by using an external potentiometer to provide a voltage divider network.Two versions of the TLV431BQPKG3 are available: the fixed output .2V and the adjustable output .2V (AO). As the name suggests, the adjustable output .2V has a wide range of output settings, from 0.2V to 20V, depending on the input voltage.

PMIC - Voltage Reference

The TLV431BQPKG3 is a popular voltage reference for PMIC applications. It is used in a variety of consumer electronics and embedded applications, from power management integrated circuit (PMIC) to data converters, sensor networks and more.The low voltage reference has a wide input voltage range and low dynamic power consumption, making it extremely suitable for power management applications. It can provide accurate and stable voltage levels even on platforms with varying supply voltages and thermal environments.It also provides excellent accuracy and temperature stability in low wattage, low noise environments. This makes it ideal for high precision analog and mixed signal systems, such as digital-to-analog converters, temperature and pressure sensors and medical devices.The TLV431BQPKG3 also offers an integrated circuit shutdown mode, where the output is disabled during an event to conserve power. This allows designers to implement creative solutions to reduce the power consumption of their designs.

Conclusion

The TLV431BQPKG3 is a highly suitable voltage reference for PMIC application fields, thanks to its wide range of input and output voltages, low power consumption and excellent accuracy and temperature stability. Its integrated circuit shutdown mode also adds further flexibility for designing energy efficient electronic applications. Overall, the TLV431BQPKG3 is an excellent choice for a wide range of PMIC applications.

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