The APE1117CK-18 is a low dropout (LDO) positive voltage regulator from Advanced Power Electronics Corp. It is designed to provide a stable 1.8V output voltage with a low dropout voltage, making it suitable for battery-powered and other voltage-sensitive applications.

Applications

• Battery-Powered Devices
• Portable Electronics
• Microcontroller Power Supplies
• Post-Regulation for Switching Power Supplies
• Noise-Sensitive Circuits

Features

• Fixed 1.8V Output Voltage
• Low Dropout Voltage (Typically 1.2V at 1A)
• 1A Output Current Capability
• Over-Current Protection
• Thermal Overload Protection
• Reverse Polarity Protection
• Available in SOT-223 Package

Benefits

• Stable Output Voltage: Provides a consistent 1.8V output voltage, even with variations in input voltage or load current.
• Low Dropout: Operates with a low difference between input and output voltage, maximizing battery life.
• Over-Current and Thermal Protection: Protects the regulator and the load from damage due to over-current or overheating.
• Reverse Polarity Protection: Prevents damage if the input voltage is accidentally reversed.
• Compact Size: SOT-223 package is small and easy to integrate into various applications.

Additional Details

The APE1117CK-18 is designed to provide a stable and regulated 1.8V output voltage from a higher input voltage. The low dropout voltage allows the regulator to operate with a small difference between the input and output voltage, which is particularly important in battery-powered applications where the battery voltage decreases as it discharges. The regulator features over-current protection, which limits the output current to prevent damage to the regulator and the load. Thermal overload protection shuts down the regulator if it gets too hot, preventing thermal damage. Reverse polarity protection protects the regulator from damage if the input voltage is accidentally reversed. The APE1117CK-18 is commonly used in applications requiring a stable 1.8V power supply, such as powering microcontrollers, sensors, and other electronic components. The SOT-223 package provides good thermal performance and is easy to solder onto printed circuit boards.