The TL431CS-PF is a precision adjustable shunt regulator manufactured by AUK corp. This three-terminal integrated circuit is widely employed as a voltage reference in numerous electronic applications. Its key characteristic is the ability to program the output voltage to any value between its internal reference voltage (typically 2.5V) and 36V using just two external resistors. Its temperature stability and low dynamic output impedance make it a versatile component.

Applications

• Linear Regulation
• Switching Regulators
• Voltage Monitoring
• Current Source/Sink Applications
• Error Amplifiers
• Voltage Comparators
• Instrumentation Amplifiers

Features

• Programmable Output Voltage: 2.5V to 36V
• Low Dynamic Output Impedance (Typically 0.2 Ohms)
• Sink Current Capability: 1mA to 100mA
• Temperature Compensated for Full Operating Temperature Range
• Low Output Noise
• Precision Reference Voltage

Benefits

• Precise Voltage Regulation: Provides a stable and accurate voltage reference, crucial for sensitive electronic circuits.
• Adjustable Output Voltage: Offers flexibility in circuit design, enabling the user to tailor the output voltage to specific requirements.
• Wide Operating Range: Functions reliably across a broad voltage spectrum, making it adaptable to various applications.
• Temperature Stability: Maintains consistent performance despite temperature fluctuations, ensuring reliable operation.
• Cost-Effective: Presents an economical solution for precise voltage regulation demands.

Additional Details

The TL431CS-PF utilizes a simple resistor divider network to set the output voltage. The output voltage is determined by the formula: Vout = Vref * (1 + R1/R2), where Vref is the internal reference voltage (approximately 2.5V), and R1 and R2 are the values of the external resistors. The device's low dynamic output impedance helps maintain a stable output voltage under varying load conditions.

The package is usually a through-hole package. For detailed specifications, performance characteristics, and application examples, refer to the official datasheet provided by AUK corp.