The KIA1117F28-RTF/P is a low dropout (LDO) voltage regulator manufactured by KEC. LDO regulators are used to provide a stable output voltage from a higher input voltage, with a minimal voltage difference between input and output. This particular model provides a fixed 2.8V output.

Applications

• Power management in portable devices
• Post-regulation for switching power supplies
• Battery-powered equipment
• Microcontroller power supplies
• Noise-sensitive circuits

Features

• Low dropout voltage (typically less than 1V at full load)
• Fixed 2.8V output voltage
• High output current capability (up to 1A)
• Short circuit protection
• Thermal overload protection

Benefits

• Extends battery life in portable devices due to low dropout voltage, enabling the device to operate longer as the battery voltage decreases.
• Provides a stable and clean power supply, improving the performance and reliability of sensitive electronic circuits.
• Protects the regulator and connected components from damage due to short circuits or excessive temperature.
• Simplifies circuit design by providing a fixed output voltage without the need for external components.
• Reduces power dissipation and improves efficiency compared to traditional linear regulators.

Additional Details

The KIA1117F28-RTF/P is typically available in a surface-mount package (e.g., SOT-223 or TO-252). It requires a small output capacitor for stability (typically a few microfarads). The input voltage range is typically up to 12V, but this should be verified in the datasheet. The dropout voltage is dependent on the output current. The device also includes features such as current limiting and over-temperature shutdown to protect the device from damage. The RTF/P suffix likely refers to the specific packaging and reel type; refer to the datasheet for clarification. This part is commonly used in various consumer electronics, industrial controls, and automotive applications.