Texas Instruments

TL431QPK

The Texas Instruments TL431QPK is a precision programmable shunt regulator that is commonly used in a variety of electronic circuits. Here is a description of the TL431QPK, including its features and applications:

Description:

The TL431QPK is a three-terminal adjustable shunt regulator that can be used to provide a stable reference voltage in electronic circuits. It has a built-in 2.5V reference source and a precision 1.25% tolerance bandgap reference. The device also has a programmable output voltage range, which can be adjusted using an external resistor network.

Features:

• Precise and stable reference voltage: The TL431QPK provides a stable reference voltage with a precision of ±1%.
• Programmable output voltage: The output voltage can be adjusted using an external resistor network, allowing for a wide range of output voltages.
• Low dropout voltage: The TL431QPK has a low dropout voltage of 2.5V, which means it can operate efficiently even with low input voltages.
• High output current: The device can provide an output current of up to 100mA.
• Thermal protection: The TL431QPK has built-in thermal protection to prevent damage in the event of an overheating condition.

Applications:

The TL431QPK is commonly used in a variety of electronic circuits, including:

1. Voltage regulation: The TL431QPK can be used to provide a stable reference voltage in voltage regulator circuits.
2. Current limiting: The device can be used to limit the current in circuits where excessive current flow could cause damage.
3. LED dimming: The TL431QPK can be used to control the brightness of LEDs by adjusting the current flowing through them.
4. Battery management: The device can be used in battery-powered devices to maintain a stable voltage output and prevent overcharging.
5. Power supply design: The TL431QPK can be used in power supply circuits to provide a stable output voltage and protect against voltage fluctuations.

Overall, the Texas Instruments TL431QPK is a versatile and reliable component that is widely used in a variety of electronic circuits. Its precision, stability, and programmability make it a popular choice for voltage regulation and current limiting applications.