The AP4310AM is a low voltage adjustable precision shunt regulator manufactured by BCD Semiconductor Manufacturing Limited. It's designed as a voltage reference and error amplifier in isolated power supplies and linear regulators. The device features a guaranteed thermal stability over a wide temperature range and a sharp turn-on characteristic, making it suitable for precise voltage regulation applications.

Applications:

• Linear Regulators
• Switching Power Supplies
• Voltage Monitors
• Error Amplifiers in SMPS
• Adjustable Power Supplies

Features:

• Low Voltage Operation: Operates down to 1.24V reference voltage.
• Adjustable Output Voltage: Output voltage can be set to any value within the operating range using external resistors.
• Precision Reference: High accuracy reference voltage (typically ±0.5%).
• Low Temperature Coefficient: Excellent temperature stability.
• Sink Capability: Capable of sinking current up to 100mA.
• Low Output Noise
• Fast Turn-On Response

Benefits:

• Precise Voltage Regulation: The high accuracy reference voltage and low temperature coefficient ensure precise voltage regulation in various applications.
• Flexible Output Voltage: The adjustable output voltage allows for a wide range of applications with different voltage requirements.
• Stable Operation: Guaranteed thermal stability over a wide temperature range ensures stable operation in harsh environments.
• Simplified Design: Requires only a few external components, simplifying the design process and reducing overall system cost.
• Robust Performance: Built-in protection features ensure robust and reliable performance.

Additional Details:

The AP4310AM is available in various packages, including SOT-23 and TO-92. It typically requires a minimum cathode current for proper operation. The output voltage is set using two external resistors connected as a voltage divider between the output and the reference input. The device operates with a low dynamic output impedance. It is widely used in power supply circuits for setting and regulating output voltage levels. The part is RoHS compliant.