Texas Instruments LM1117T-3.3/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.51 | $1.51 |
| 15+ | $1.46 | $21.90 |
| 25+ | $1.43 | $35.75 |
| 50+ | $1.35 | $67.50 |
| 100+ | $1.19 | $119.00 |
| N+ | $0.24 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | LM1117-3.3 |
| Packaging | Tube | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 15V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 1.2V @ 800mA |
| Current - Output | 800mA |
| Current - Quiescent (Iq) | 5 mA |
| Current - Supply (Max) | 10 mA |
| PSRR | 75dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | 0°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | TO-220-3 |
| Supplier Device Package | TO-220-3 |
| ROHS |
The LM1117T-3.3/NOPB from Texas Instruments is a reliable 800mA low dropout linear regulator with a fixed 3.3V output. It features a low dropout voltage of 1.2V at full load, making it suitable for 5V to 3.3V conversion. With 75dB PSRR at 120Hz, it provides a clean output. The TO-220-3 package ensures easy mounting and good thermal dissipation.
- Proven Reliability: A long-standing industry-standard regulator with a robust design.
- Low Dropout: 1.2V dropout at 800mA enables efficient 5V to 3.3V conversion.
- Good Ripple Rejection: 75dB PSRR at 120Hz ensures stable output.
- Easy Thermal Management: TO-220-3 package allows for simple heatsink attachment.
General-Purpose 3.3V Logic Supply
The LM1117 is a classic choice for powering 3.3V logic circuits, microcontrollers, and digital ICs in a wide range of embedded systems.
Post-Regulation for 5V to 3.3V Conversion
With a 1.2V dropout, it can efficiently convert a 5V rail down to 3.3V, making it ideal for mixed-voltage systems.
FPGA and CPLD Core Power
Many FPGAs and CPLDs require a 3.3V auxiliary or I/O supply. The LM1117 provides a stable and reliable source.
Networking Equipment
For routers, switches, and modems, this regulator ensures a clean 3.3V supply for PHY chips and processors.
Consumer Electronics
From set-top boxes to gaming peripherals, the LM1117 is a trusted solution for 3.3V power distribution.
- Q: What is the output voltage?
- A: The LM1117T-3.3/NOPB provides a fixed 3.3V output.
- Q: What is the maximum output current?
- A: It can supply up to 800mA of output current.
- Q: What is the input voltage range?
- A: The input voltage must be at least 3.3V (output voltage) plus dropout. The dropout is 1.2V at 800mA.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.2V at an 800mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 5 mA.
- Q: What package is available?
- A: It is available in a TO-220-3 package.
- Q: What is the output voltage?
- A: The LM1117T-3.3/NOPB provides a fixed 3.3V output.
- Q: What is the maximum output current?
- A: It can supply up to 800mA of output current.
- Q: What is the input voltage range?
- A: The input voltage must be at least 3.3V (output voltage) plus dropout. The dropout is 1.2V at 800mA.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.2V at an 800mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 5 mA.
- Q: What package is available?
- A: It is available in a TO-220-3 package.

LM1117T-3.3/NOPB.pdf