Texas Instruments LM3940IMPX-3.3/NOPB Microcontrollers
3.3V LDO Regulator, 1A, SOT-223, 4.5V-7.5V In
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
LM3940IMPX-3.3/NOPB
Detailed Description
3.3V LDO Regulator, 1A, SOT-223, 4.5V-7.5V In
Package
TO-261-4, TO-261AA
Lifecycle Status
Active
Datasheet
LM3940IMPX-3.3/NOPB Datasheet
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Technical Specifications
Texas Instruments LM3940IMPX-3.3/NOPB Microcontrollers technical specifications.
General
RoHS
Yes
Package / Case
TO-261-4, TO-261AA
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 125°C
Lifecycle Status
Active
Output Type
Fixed
Max Input Voltage
7.5V
Output Current
1A
Output Configuration
Positive
Output Voltage
3.3V
Alternate Parts Comparison (LM3940IMPX-3.3/NOPB vs LM317MDCYRG3 vs TLV1117CDCYRG3 vs REG1118-2.85/2K5)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | TO-261-4, TO-261AA | TO-261-4, TO-261AA | TO-261-4, TO-261AA | TO-261-4, TO-261AA |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C (TJ) | 0°C ~ 125°C | 0°C ~ 70°C |
| Lifecycle Status | Active | Active | Active | Active |
| Max Input Voltage | 7.5V | 40V | 15V | 6V |
| Number of Regulators | 1 | 1 | 1 | 1 |
| Output Configuration | Positive | Positive | Positive | Positive |
| Output Current | 1A | 500mA | 800mA | 800mA |
| Output Type | Fixed | Adjustable | Adjustable | Fixed |
| Output Voltage | 3.3V | 1.25V | 1.25V | 2.85V |
| Protection Features | Over Temperature, Short Circuit | Over Current, Over Temperature, Short Circuit | Over Current, Over Temperature | Over Current, Over Temperature |
| RoHS | Yes | Yes | -- | Yes |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
Suggested replacements
NCP1117IST33T3GonsemiSimilaronsemi
Pin NoPkg YesElec Mixed
Linear Voltage Regulator IC Positive Fixed 1 Output 1A SOT-223
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