The Texas Instruments LM1117IMPX-3.3/NOPB is an 800 mA low-dropout linear regulator that outputs a fixed 3.3 V in the SOT-223 package, supplied on tape and reel for automated assembly. The industrial temperature range, ±1% output tolerance and low 1.2 V maximum dropout suit high-volume production of 3.3 V logic and power rails, with on-chip current-limit and thermal protection.
Key Specifications
| Manufacturer | Texas Instruments |
| Exact Manufacturer Part Number | LM1117IMPX-3.3/NOPB |
| Product Category | Power Management – Voltage Regulators |
| Series / Family | LM1117 |
| Package / Case | SOT-223 |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C to +125°C |
| Power Supply | Up to 15 V input |
| Output Current | 800 mA |
| Output Voltage | Fixed 3.3 V |
| Dropout Voltage | 1.2 V max at 800 mA (1.1 V typical) |
| Output Accuracy | ±1% (fixed output) |
| Input Voltage | Up to 15 V |
| Protection | Current limit and thermal shutdown |
| Lifecycle Status | Active |
| Official Documentation | View official documentation |
Key Features
- 800 mA low-dropout linear regulator
- 1.2 V maximum dropout at full load
- Current-limit and thermal-shutdown protection
- Output tolerance ±1% for fixed versions
- Stable with 10 µF output capacitor
- Low quiescent current
Applications
- Volume production 3.3 V rails
- Industrial electronics
- Consumer logic supplies
- Embedded systems
Sourcing
Availability, lead time, date code and commercial terms are subject to confirmation at the time of quotation.
Quality
CHIPER sources brand-new, unused components and provides quality inspection, shortage and long lead-time sourcing, and one-stop BOM procurement. Every part is verified before shipment.
FAQ
What is the difference between IMP and IMPX?
The IMPX suffix adds tape-and-reel packaging; both are industrial SOT-223 3.3 V variants.
What is the dropout voltage of the LM1117?
Dropout is typically 1.1 V and 1.2 V maximum at 800 mA.
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