The LR431APHLT1G is a precision adjustable shunt regulator manufactured by Leshan Radio. This three-terminal adjustable regulator is designed to provide a stable and accurate voltage reference, making it suitable for a wide range of applications, including power supplies, voltage monitoring, and error amplifiers. It offers excellent thermal stability, low output noise, and a sharp turn-on characteristic.

Applications:

• Power Supplies: Used as a voltage reference in regulated power supplies to provide a stable and accurate output voltage.
• Voltage Monitoring: Employed in voltage monitoring circuits to detect overvoltage or undervoltage conditions and trigger appropriate actions.
• Error Amplifiers: Utilized as a key component in error amplifier circuits to maintain a precise output voltage or current.
• Switching Regulators: Incorporated into switching regulators to provide a stable reference voltage for feedback control.
• Linear Regulators: Used in linear regulators for precise voltage regulation and load regulation.

Features:

• Adjustable Output Voltage: Offers an adjustable output voltage, allowing flexibility in circuit design and application.
• Low Output Noise: Provides low output noise, ensuring a clean and stable voltage reference.
• Excellent Thermal Stability: Exhibits excellent thermal stability, maintaining consistent performance over a wide temperature range.
• Sharp Turn-On Characteristic: Features a sharp turn-on characteristic for precise voltage regulation.
• Low Dynamic Output Impedance: Offers a low dynamic output impedance for improved load regulation.
• RoHS Compliant: Complies with RoHS directives, ensuring environmental friendliness.

Benefits:

• Precise Voltage Regulation: Provides precise voltage regulation, ensuring stable and accurate output voltages.
• Improved Circuit Performance: Enhances circuit performance by providing a reliable and stable voltage reference.
• Versatile Application: Suitable for a wide range of applications due to its adjustable output voltage.
• Stable Operation: Ensures stable operation over a wide temperature range.
• Reduced Noise: Minimizes output noise for improved signal integrity.

Specifications:

The LR431APHLT1G has an adjustable output voltage range, typically from Vref to 36V, where Vref is around 2.5V. It is designed for a low cathode current, typically in the range of microamperes. It is designed to operate from -40°C to +125°C.