The TL431FDT,215 is a three-terminal adjustable shunt regulator from Nexperia. It is a precision voltage reference integrated with an operational amplifier, making it a versatile component for various voltage regulation and control applications. This device offers excellent temperature stability, low output noise, and a wide operating current range. Its adjustable output voltage allows it to be configured for a variety of voltage levels, making it suitable for replacing Zener diodes in many applications.

Applications

• Precision voltage references
• Linear regulators
• Switching power supplies
• Overvoltage protection circuits
• Current sources
• Voltage monitoring
• Error amplifiers

Features

• Programmable output voltage: 2.5 V to 36 V
• Low dynamic output impedance: 0.2 Ω (typical)
• Sink current capability: 1 mA to 100 mA
• Typical temperature drift: 8 mV (over -40°C to +125°C)
• Low output noise
• Fast turn-on response
• Available in SOT-23 package

Benefits

• Versatile voltage regulation: Adjustable output voltage allows for use in a wide range of applications, replacing fixed-voltage Zener diodes.
• High precision: The accurate voltage reference ensures stable and reliable performance.
• Low output impedance: Provides excellent load regulation, minimizing voltage variations due to changes in load current.
• Temperature stability: Maintains stable output voltage over a wide temperature range.
• Compact size: The SOT-23 package allows for use in space-constrained applications.
• Cost-effective: Offers a cost-effective solution for voltage regulation and control.

The TL431FDT,215 is commonly used in switching power supplies as a feedback element to regulate the output voltage. It can also be used in linear regulators to provide a stable and adjustable voltage source. Its overvoltage protection capabilities make it useful in protecting sensitive circuits from voltage spikes. The device's low output noise makes it suitable for use in audio applications. The device is characterized for operation from -40°C to +125°C.