The APL5508-19DC-TR is a low dropout (LDO) linear regulator manufactured by Anpec Electronics. It is designed to provide a stable and accurate voltage supply for various electronic devices and systems. This regulator is known for its low quiescent current, high accuracy, and excellent transient response, making it suitable for battery-powered devices and other noise-sensitive applications.

Applications:

• Battery-powered devices
• Portable equipment
• Post-regulation for switching power supplies
• Microcontroller power supplies
• Noise-sensitive circuits

Features:

• Low Dropout Voltage: Ensures stable regulation even with a small difference between input and output voltage.
• Low Quiescent Current: Minimizes power consumption, extending battery life in portable devices.
• High Output Accuracy: Provides a precise output voltage, critical for sensitive electronic components.
• Over-Current Protection: Protects the regulator and connected circuitry from excessive current draw.
• Over-Temperature Protection: Prevents thermal damage by shutting down the regulator when the temperature exceeds safe limits.
• Enable/Disable Control: Allows for external control of the regulator's output, reducing power consumption in standby mode.

Benefits:

• Extended Battery Life: The low quiescent current significantly reduces power consumption, prolonging the operating time of battery-powered devices.
• Stable Voltage Supply: The low dropout voltage and high accuracy ensure a consistent and reliable voltage supply, even under varying load conditions.
• Enhanced System Reliability: Integrated protection features such as over-current and over-temperature protection enhance the overall reliability of the system.
• Simplified Design: The compact package and easy-to-use enable/disable control simplify the design process and reduce board space requirements.
• Improved Noise Performance: The stable output voltage and low noise characteristics make it suitable for noise-sensitive applications.

Technical Specifications:

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage: 1.9V
• Output Current: 300mA
• Dropout Voltage: 200mV (typical at 300mA)
• Quiescent Current: 55μA (typical)
• Operating Temperature Range: -40°C to +85°C
• Package: SOT-23-5

The APL5508-19DC-TR from Anpec is a versatile LDO regulator designed to provide a stable and efficient voltage supply in a variety of applications. Its low dropout voltage, low quiescent current, and integrated protection features make it an ideal choice for battery-powered devices and other power-sensitive applications where reliability and efficiency are critical.