The HT1117-28_SOT223 is a low dropout (LDO) voltage regulator manufactured by Holtek. The '28' likely indicates an output voltage of 2.8V, and SOT223 refers to the package type.

Applications:

• Portable devices
• Battery-powered systems
• Microcontroller power supplies
• Wireless communication devices
• Consumer electronics

Features:

• Low dropout voltage
• High accuracy output
• Overcurrent protection
• Thermal shutdown protection
• SOT223 package
• Fixed output voltage (2.8V)

Benefits:

• Provides a stable and regulated voltage supply even with low input voltage
• Ensures reliable operation of sensitive electronic components
• Protects the regulator and the load from damage
• Prevents overheating under fault conditions
• Suitable for surface mount assembly

Technical Specifications:

Based on the part number HT1117-28_SOT223 and typical Holtek LDO regulator specifications, it likely features:

• Output Voltage: 2.8V
• Input Voltage Range: Typically up to 12V (Consult datasheet)
• Dropout Voltage: Typically less than 1V at rated current
• Output Current: Typically 800mA to 1A (Consult datasheet)
• Accuracy: Typically ±2%
• Quiescent Current: Low, consult datasheet
• Protection Features: Overcurrent, Thermal Shutdown
• Package: SOT223

The HT1117-28_SOT223 is suitable for providing a regulated 2.8V supply in a variety of applications. Consult the manufacturer's datasheet for detailed specifications and application guidelines.