Texas Instruments LM3940IT-3.3 Linear Controllers
IC REG LINEAR 3.3V 1A TO220-3
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
LM3940IT-3.3
Detailed Description
IC REG LINEAR 3.3V 1A TO220-3
Package
TO-220-3
Key Features
Package / Case: TO-220-3; Mounting Type: Through Hole
Lifecycle Status
Not For New Designs
RoHS State
RoHS Compliant
Datasheet
LM3940IT-3.3 Datasheet
Quick Jump:
Technical Specifications
Texas Instruments LM3940IT-3.3 Linear Controllers technical specifications.
General
RoHS
Yes
Package / Case
TO-220-3
Mounting Type
Through Hole
Operating Temperature
-40°C ~ 125°C
Lifecycle Status
Not For New Designs
Output Type
Fixed
Max Input Voltage
7.5V
Output Current
1A
Output Configuration
Positive
Output Voltage
3.3V
Alternate Parts Comparison (LM3940IT-3.3 vs LM337KCSE3 vs LM1084IT-ADJ/NOPB vs LM1117T-3.3/NOPB)
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-220-3 | TO-220-3 | TO-220-3 | TO-220-3 |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole |
| Operating Temperature | -40°C ~ 125°C | 0°C ~ 125°C | -40°C ~ 125°C | 0°C ~ 125°C |
| RoHS | Yes | Yes | Yes | Yes |
| Lifecycle Status | Not For New Designs | Active | Active | Active |
| Accuracy | 2.5 | 2.4 | 1.5 | 3 |
| Dropout Voltage Vdo Typ Mv | 310 | 2000 | 1300 | 1200 |
| Iq Typ Ma | 0.11 | 1.5 | 5 | 5 |
| Load Capacitance Min F | 33 | 1 | 10 | 10 |
| Max Input Voltage | 7.5V | -40V | 29V | 15V |
| Noise Vrms | 150 | 1110 | 38 | 38 |
| Number of Regulators | 1 | 1 | 1 | 1 |
| 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
NCP708MU330TAGonsemiSimilaronsemi
Pin NoPkg NoElec Mixed
LDO Regulator, 1 A, Low Dropout, High PSRR, with Enable 3.3V, 3000-REEL
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