LM1117T-3.3 800mA Low Dropout Positive Voltage Regulator TO-220-3 (LM1117T-3.3V TO220-3)
The LM1117T-3.3 is a low dropout (LDO) positive voltage regulator designed to provide a fixed 3.3V output with a current capability of up to 800mA. It is part of the popular 1117 series, known for its small form factor and efficiency. This IC is engineered to maintain a stable output with a low input-to-output voltage differential, featuring a maximum dropout of 1.2V at 800mA. It includes a zener trimmed bandgap reference to ensure high output voltage accuracy.
This IC is primarily used in high-efficiency linear regulators, battery chargers, and active SCSI terminators. It is a fundamental component for Arduino electronics projects in India that require a steady 3.3V rail for powering sensors, ESP8266/ESP32 modules, and other low-power digital logic from a 5V or higher DC source.
Key Features
- Fixed 3.3V output voltage
- 800mA maximum output current capability
- Low dropout voltage (typically 1.2V at 800mA)
- Internal current limiting and thermal overload protection
- Stable operation with tantalum or electrolytic capacitors
- Fast transient response for digital logic stability
- Standard TO-220 package for easy mounting and heat dissipation
- Accuracy within +/- 1 percent
Specifications
- IC Type = Fixed Low Dropout (LDO) Regulator
- Output Voltage = 3.3V
- Max Output Current = 800mA
- Max Input Voltage = 15V
- Dropout Voltage = 1.2V (at 800mA)
- Package Type = TO-220-3
- Number of Pins = 3
- Mounting Type = Through-Hole
- Operating Temperature = 0 to 125 degrees Celsius
Interfaces
- PIN 1 (GND) = Ground Connection
- PIN 2 (OUTPUT) = Fixed 3.3V Output (connected to Tab)
- PIN 3 (INPUT) = Unregulated DC Input Voltage
- TAB = Connected to Output Pin (serves as heat sink)
