Product Overview: TL431AQDCKR from Texas Instruments

The TL431AQDCKR is a highly versatile, precision programmable reference from Texas Instruments. This device is a three-terminal adjustable shunt regulator with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.495 V) and 36 V with two external resistors. This flexibility makes the TL431AQDCKR an ideal replacement for zener diodes in many applications such as onboard voltage regulators, adjustable power supplies, and switching power supplies.

The TL431AQDCKR is offered in a small surface-mount package, specifically the SC-70 (SOT-323), which is suitable for automated assembly processes and helps in reducing the overall footprint of the circuit design. The device features a typical output impedance of 0.2 ohms, providing better regulation characteristics compared to conventional zener diodes. Furthermore, Texas Instruments ensures that each unit is characterized for performance across a wide range of current and temperature, making it reliable for various applications.

Key features of the TL431AQDCKR include:

• Programmable Output Voltage: 2.495 V to 36 V
• Low Output Noise
• 0.2% Initial Reference Voltage Tolerance
• Low Dynamic Output Impedance, 0.2 ohms Typical
• Sink Current Capability: 1 mA to 100 mA
• Wide Operating Temperature Range: -40°C to 125°C

This device is particularly well-suited for precision voltage regulation and can be used in a variety of applications such as temperature control systems, battery chargers, and voltage monitoring. Its high stability and low temperature coefficient make it an excellent choice for precision applications. Additionally, the TL431AQDCKR is a popular choice for building voltage reference circuits that require a stable and adjustable output.

Overall, the TL431AQDCKR from Texas Instruments represents a reliable and flexible solution for designers who require a high-performance adjustable shunt regulator. Its compact form factor, combined with its robust feature set, ensures that it can meet the stringent requirements of a wide range of electronic applications.