The SC431CSK-5TR is a precision adjustable shunt regulator from Semtech Corporation, offering a cost-effective solution for voltage regulation and reference applications. As a three-terminal device, it provides an adjustable output voltage ranging from its internal reference voltage up to 36V. Its notable features include low dynamic output impedance, excellent temperature stability, and sharp turn-on characteristics, making it a robust alternative to Zener diodes in numerous applications.

Applications:

• Precision Voltage References
• Linear Regulators
• Switching Power Supplies
• Adjustable Power Supplies
• Voltage Monitoring
• Error Amplifiers in Power Supplies

Features:

• Adjustable Output Voltage: Vref to 36V
• Low Dynamic Output Impedance: Typically 0.2Ω
• Sink Current Capability: 1mA to 100mA
• Low Temperature Coefficient
• Off-State Current: Typically 100nA
• Excellent Temperature Stability
• Sharp Turn-On Characteristics
• Compact SOT-23 Package

Benefits:

• Provides a stable and accurate voltage reference, critical for precise regulation.
• Simplifies circuit design and reduces component count due to its adjustable output voltage.
• Offers flexibility in voltage selection, accommodating various application requirements.
• Enhances circuit performance and reliability with its excellent temperature stability.
• Provides a cost-effective alternative to Zener diodes, often with superior performance.

Additional Details:

The SC431CSK-5TR is typically employed in applications needing a highly stable voltage reference or an accurate error amplifier. The output voltage can be adjusted by using two external resistors. Its low dynamic output impedance helps ensure stable operation within regulation circuits. The use of the SOT-23 package makes it suitable for space-constrained applications. The reference voltage is generally around 2.5V. The maximum cathode voltage is 36V, and the device can handle sink currents from 1mA up to 100mA. Its versatile features make it suitable for various power management applications where precise and stable voltage regulation is necessary.