The Texas Instruments LM1117DTX-3.3/NOPB is an 800 mA low-dropout linear regulator that provides a fixed 3.3 V output in a TO-252 (DPAK) surface-mount package. With a maximum dropout of 1.2 V at full load and ±1% output tolerance, it suits point-of-load 3.3 V rails for logic, MCU and interface circuits. Built-in current limiting and thermal shutdown protect the regulator under fault conditions.
Key Specifications
| Manufacturer | Texas Instruments |
| Exact Manufacturer Part Number | LM1117DTX-3.3/NOPB |
| Product Category | Power Management – Voltage Regulators |
| Series / Family | LM1117 |
| Package / Case | TO-252 (DPAK) |
| Mounting Type | Surface Mount |
| Operating Temperature | 0°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
- 3.3 V logic and MCU supplies
- Point-of-load regulation
- Interface and peripheral power
- Embedded systems
Sourcing
Availability, lead time, date code and commercial terms are subject to confirmation at the time of quotation.
Quality
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FAQ
What does the DTX suffix denote?
DTX indicates the TO-252 (DPAK) package supplied on tape and reel.
How much current can the LM1117DTX-3.3 supply?
It is rated for 800 mA with a maximum dropout of 1.2 V.
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