Texas Instruments LM3940ISX-3.3/NOPB Linear Controllers
IC REG LIN 3.3V 1A DDPAK/TO263-3
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
LM3940ISX-3.3/NOPB
Detailed Description
IC REG LIN 3.3V 1A DDPAK/TO263-3
Package
TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
Key Features
Package / Case: TO-263-4, D²Pak (3 Leads + Tab), TO-263AA; Mounting Type: Surface Mount
Lifecycle Status
Active
RoHS State
RoHS Compliant
Datasheet
LM3940ISX-3.3/NOPB Datasheet
Quick Jump:
Technical Specifications
Texas Instruments LM3940ISX-3.3/NOPB Linear Controllers technical specifications.
General
RoHS
Yes
Package / Case
TO-263-4, D²Pak
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 (LM3940ISX-3.3/NOPB vs LM317S/NOPB vs LM2940CSX-15/NOPB vs LM1086CS-ADJ)
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-263-4, D²Pak | TO-263-4, D²Pak | TO-263-4, D²Pak | TO-263-4, D²Pak |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 125°C | 0°C ~ 125°C | 0°C ~ 125°C | 0°C ~ 125°C (TJ) |
| RoHS | Yes | Yes | Yes | Yes |
| Lifecycle Status | Active | Active | Active | Not For New Designs |
| Max Input Voltage | 7.5V | 37V | 26V | 29V |
| Number of Regulators | 1 | 1 | 1 | 1 |
| Output Configuration | Positive | Positive | Positive | Positive |
| Output Current | 1A | 1.5A | 1A | 1.5A |
| Output Type | Fixed | Adjustable | Fixed | Adjustable |
| Output Voltage | 3.3V | 1.25V | 15V | 1.2V |
| Package | TO-263 (KTT)-3 | TO-263 (KTT)-3 | TO-263-4, D²Pak (3 Leads + Tab), TO-263AA | TO-263 (KTT)-3 |
| 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
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