LM1117
The LM1117 is a low dropout voltage regulator available in fixed and adjustable output versions. It is designed to provide an output current of up to 800mA with a dropout voltage of 1V at full load. This regulator is ideal for various applications, including powering low-voltage digital systems, post-regulation of switching supplies, and battery-powered devices.
Key Features:
- Low Dropout Voltage: 1V at 800mA
- Output Current: Up to 800mA
- Fixed and Adjustable Versions: Output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V
- Thermal Overload Protection: Protects the regulator from overheating
- Short Circuit Protection: Protects the regulator and the load
- High-Accuracy Output Voltage: ±1% (fixed version)
- Low Quiescent Current: Ideal for battery-powered applications
- Input Voltage Range: Up to 20V
- Output Voltage Tolerance: ±1% (fixed version)
- Dropout Voltage: 1V at 800mA
- Output Current: 800mA
- Operating Junction Temperature Range: -40°C to +125°C
- Package Options: SOT-223, TO-220, and TO-263
- Low voltage digital systems
- Post-regulation for switching supplies
- Battery-powered devices
- Portable instruments
- Motherboards
- Powering FPGAs, ASICs, and DSPs
- Connect the input voltage to the input pin of the LM1117.
- Connect the output pin to the load.
- For the adjustable version, use external resistors to set the desired output voltage.
- Ensure proper heat sinking to maintain thermal performance.
- Do not exceed the maximum input voltage to avoid damaging the regulator.
- Provide adequate heat sinking to prevent thermal shutdown.
- Avoid short circuits to protect the regulator and load.