TL431AQDBZR is a dedicated adjustable precision shunt regulator integrated circuit (IC) produced by Texas Instruments. It is a member of the TL431 family and provides voltage reference and regulation. The TL431AQDBZR variant offers improved performance and accuracy compared to earlier versions.
Following are some key features and specifications of the TL431AQDBZR:
1. Adjustable Reference Voltage: The TL431AQDBZR is an adjustable precision shunt regulator that provides a reference voltage between cathode and anode. By using an external resistor, the output voltage can be set to a desired value.
2. Voltage Reference Accuracy: The IC has a high level of voltage reference accuracy, typically within ±1% of the programmed output voltage. This precision ensures precise regulation and stability in a wide variety of applications.
3. Wide operating voltage range: TL431AQDBZR can work in a wide input voltage range, typically 2.5V to 36V. This flexibility allows it to be used in a variety of voltage levels and applications.
4. Low output impedance: This IC has low output impedance, which helps to improve load regulation performance and maintains a stable output voltage even under varying load conditions.
5. Low quiescent current: TL431AQDBZR has a low quiescent current, typically about 1.2mA. This low power consumption makes it suitable for battery-operated and low-power applications.
6. Package Type: The TL431AQDBZR is packaged in DBZ, a small SOT-23-3 surface mount package. This compact package offers convenience in terms of space saving and easy integration into circuit designs.
The TL431AQDBZR is commonly used in a variety of applications, including:
- Voltage Reference: Can be used as a voltage reference in precision measurement circuits, voltage regulators, and analog-to-digital converters to maintain a stable and accurate reference voltage.
- Voltage Regulation: The TL431AQDBZR acts as a voltage regulator in power supplies, battery chargers and DC-DC converters. It ensures a constant and stable output voltage, protecting downstream components from voltage fluctuations.
- Overvoltage Protection: It can be used as an overvoltage protection device to protect sensitive electronic equipment from voltage spikes and transients by triggering a shutdown or fault mechanism.
- Feedback Control: The TL431AQDBZR can be used as a feedback control element in a closed-loop system, providing precise control of parameters such as current, temperature, or voltage level.
When using the TL431AQDBZR or any voltage reference/regulator, be sure to consult the datasheet and application notes provided by Texas Instruments. These resources contain detailed electrical specifications, recommended operating conditions, and design guidelines to ensure optimum performance and reliability in specific applications.
