The APL5501-33KC is a low dropout (LDO) linear regulator manufactured by Anpec. It is designed to provide a stable and regulated 3.3V output voltage with low dropout voltage and low quiescent current. This makes it suitable for various applications requiring a clean and efficient power source, especially in battery-powered and portable devices.

Applications

• Portable Electronics
• Battery-Powered Devices
• Post-Regulation for Switching Power Supplies
• Microcontroller Power Supplies
• Wireless Communication Devices

Features

• Fixed Output Voltage: Provides a stable 3.3V output voltage.
• Low Dropout Voltage: Ensures regulation even when the input voltage is close to the output voltage, maximizing efficiency.
• Low Quiescent Current: Minimizes power consumption when the regulator is in standby mode, extending battery life.
• Overcurrent Protection: Protects the regulator and the load from excessive current draw, preventing damage.
• Thermal Shutdown Protection: Prevents overheating by automatically shutting down the regulator when the temperature exceeds a safe limit.
• Short Circuit Protection: Protects the regulator and the load from short circuit conditions, ensuring reliable operation.
• Stable with Ceramic Output Capacitors: Ensures stable operation with low-ESR ceramic capacitors, simplifying design and reducing component count.
• Available in a compact package: Suitable for space-constrained applications.

Benefits

• Stable Output Voltage: Provides a consistent and reliable power source for sensitive electronic components, ensuring proper functionality.
• Extended Battery Life: Low quiescent current minimizes power consumption, extending battery life in portable devices and reducing the need for frequent charging.
• Enhanced System Reliability: Overcurrent and thermal shutdown protection ensure reliable operation and prevent damage, improving system robustness.
• Simplified Design: Fixed output voltage simplifies the design process and reduces the need for external components, lowering BOM cost and design time.
• Compact Size: Suitable for space-constrained applications, allowing for integration into smaller devices.

Additional Details

The APL5501-33KC operates from a single power supply voltage. The low dropout voltage allows the regulator to maintain regulation even when the input voltage is close to the output voltage, improving efficiency and maximizing battery life. The regulator also features overcurrent protection, thermal shutdown protection, and short circuit protection to ensure reliable operation and prevent damage. It is stable with ceramic output capacitors which is important in modern designs. The 'KC' at the end of the part number refers to the specific package and possibly other characteristics. Refer to the datasheet for detailed specifications, package information, and application recommendations for optimal performance and stability.