The APL431HAAC-TRL is a precision adjustable shunt regulator manufactured by Anpec Electronics. This integrated circuit is commonly used as a voltage reference and error amplifier in power supply circuits.

Applications

• Switching power supplies: Used as a voltage reference in switching regulators.
• Linear regulators: Provides a stable voltage reference for linear voltage regulators.
• Overvoltage protection circuits: Implemented in circuits to protect against overvoltage conditions.
• Current limiters: Can be used in current limiting circuits.
• Battery chargers: Provides a regulated voltage for charging batteries.

Features

• Adjustable output voltage: Output voltage can be adjusted using external resistors.
• Low temperature coefficient: Provides a stable reference voltage over a wide temperature range.
• Low output noise: Minimizes noise in the regulated voltage output.
• High precision: Offers a precise and accurate voltage reference.
• Low cathode current: Operates with a low cathode current.

Benefits

• Stable voltage regulation: Provides a stable and accurate regulated voltage.
• Improved power supply performance: Contributes to improved performance and reliability of power supplies.
• Versatile application: Suitable for a wide range of power supply applications.
• Simplified circuit design: Simplifies circuit design compared to discrete voltage reference circuits.
• Cost-effective solution: Provides a cost-effective solution for voltage regulation.

Additional Details

The output voltage of the APL431HAAC-TRL is typically set using two external resistors connected in a voltage divider configuration. The datasheet provides equations for calculating the required resistor values. The device requires a minimum cathode current to maintain regulation. Careful attention to PCB layout is essential to minimize noise and ensure stable operation.