The LM1117 is a low dropout voltage regulator with a dropout of 3.3V at 800mA of load current. The LM1117 is available in an adjustable version, which can set the output voltage from 1.25V to 13.8V with only two external resistors. In addition, it is also available in fixed voltage, 3.3V. The LM1117 offers current limiting and thermal shutdown. Its circuit includes a zener trimmed bandgap reference to assure output voltage accuracy to within ±1%. The LM1117 is available in the TO-220 package. A minimum of 10µF tantalum capacitor is required at the output to improve the transient response and stability.
LM1117 Key Features
- Current Limiting and Thermal Protection
- Output Current 800mA
- Temperature Range 0˚C to 125˚C
- Line Regulation 0.2% (Max)
- Load Regulation 0.4% (Max)
LM1117 Pinout
LM1117 Pin Configuration
| Pin No | Pin Name |
|---|---|
| 1 | INPUT |
| 2 | OUTPUT |
| 3 | ADJ/GND |
Product Attributes
| TYPE | DESCRIPTION |
| Series | LM1117-3.3 |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage – Input (Max) | 15V |
| Voltage – Output (Min/Fixed) | 3.3V |
| Voltage Dropout (Max) | 1.2V @ 800mA |
| Current – Output | 800mA |
| Current – Quiescent (Iq) | 5 mA |
| Current – Supply (Max) | 10 mA |
| PSRR | 75dB (120Hz) |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | 0°C ~ 125°C |
| Mounting Type | Through Hole |
| Package / Case | TO-220-3 |
Application
- 2.85V Model for SCSI-2 Active Termination
- Post Regulator for Switching DC/DC Converter
- High-Efficiency Linear Regulators
- Battery Charger
- Battery Powered Instrumentation
