The SC431CSK-2ADJ is an adjustable precision shunt regulator manufactured by Semtech Corporation. This three-terminal device provides a cost-effective and high-performance alternative to Zener diodes in many voltage regulation and reference applications. Its adjustable output voltage, combined with excellent temperature stability and low dynamic output impedance, makes it suitable for a variety of linear and switching power supply designs.

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
• Available in various package options, including SOT-23

Benefits:

• Provides a stable and accurate voltage reference for precise regulation.
• Reduces component count and simplifies circuit design through its adjustable nature.
• Offers design flexibility by allowing voltage adjustment to suit specific application needs.
• Improves circuit reliability and performance because of its excellent temperature stability.
• Cost-effective alternative to Zener diodes, often providing enhanced performance.

Additional Details:

The SC431CSK-2ADJ is characterized by its precision reference voltage and low dynamic impedance, making it ideal for creating stable voltage references and error amplifiers. The output voltage is adjustable by using two external resistors. The device is packaged in a compact SOT-23 package, which is beneficial for space-constrained applications. The reference voltage is typically around 2.5V, and it can handle a cathode voltage up to 36V. With a sink current range of 1mA to 100mA, it can be used in various power supply circuits. This device's combination of features and benefits makes it a versatile choice for a wide range of voltage regulation and reference applications.