The SC431CK-1.TR is a precision adjustable shunt regulator from Semtech Corporation. It is designed to function as a low-voltage adjustable regulator in a wide range of applications. This three-terminal adjustable shunt regulator offers excellent temperature stability and a sharp turn-on characteristic, making it suitable for replacing Zener diodes in many applications.

Applications:

• Precision Voltage References
• Linear Regulators
• Switching Power Supplies
• Adjustable Power Supplies
• Voltage Monitoring

Features:

• Adjustable Output Voltage: Vref to 36V
• Low Dynamic Output Impedance: 0.2Ω typical
• Sink Current Capability: 1mA to 100mA
• Low Temperature Coefficient
• Off-State Current: 100nA typical
• Excellent Temperature Stability
• Sharp Turn-On Characteristics
• Available in various package options including SOT-89

Benefits:

• Provides a stable and accurate voltage reference for precise regulation.
• Reduces component count and simplifies circuit design due to its adjustable nature.
• Offers flexibility in voltage selection, catering to a wide variety of application requirements.
• Enhances circuit performance and reliability through its excellent temperature stability.
• Can replace Zener diodes, often improving performance and reducing cost.

Additional Details:

The SC431CK-1.TR is typically used in applications requiring a stable voltage reference or error amplifier. The output voltage is adjustable via two external resistors. The device's low dynamic output impedance contributes to its effectiveness in regulation circuits. This regulator is offered in a SOT-89 package. It operates over an industrial temperature range. Detailed specifications include a reference voltage of approximately 2.5V. The maximum cathode voltage is 36V, and it can sink currents from 1mA up to 100mA. These features make it a versatile choice for diverse power management applications.