Texas Instruments LM2678S-3.3/NOPB DC DC Switching Regulators
5A, 3.3V fixed output buck converter with 82% efficiency.
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
LM2678S-3.3/NOPB
Series
Base Model
Detailed Description
5A, 3.3V fixed output buck converter with 82% efficiency. Operates from an 8V to 40V input voltage range, featuring a 260kHz switching frequency. This surface mount device, housed in a TO-263 package, supports a maximum output current of 5A. Designed for a wide operating temperature range of -40°C to 125°C.
Package
TO-263
Lifecycle Status
Active
RoHS State
RoHS Compliant
Datasheet
LM2678S-3.3/NOPB Datasheet
Quick Jump:
Technical Specifications
Texas Instruments LM2678S-3.3/NOPB DC DC Switching Regulators technical specifications.
General
Series
SIMPLE SWITCHER®
RoHS
Yes
Number of Channels
1
Package / Case
TO-263-8, D²Pak
Packaging
Rail/Tube
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 125°C (TJ)
Supply Voltage
8V ~ 40V
Package
TO-263
Current Rating
5A
Alternate Parts Comparison (LM2678S-3.3/NOPB vs LM2678S-ADJ/NOPB vs LM2678S-12 vs LM2678S-5.0/NOPB)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Series | SIMPLE SWITCHER® | -- | SIMPLE SWITCHER® | SIMPLE SWITCHER® |
| Package / Case | TO-263-8, D²Pak | -- | TO-263-8, D²Pak | TO-263-8, D²Pak |
| Operating Temperature | -40°C ~ 125°C (TJ) | -- | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) |
| Switching Frequency | 260kHz | -- | 260kHz | 260kHz |
| Max Input Voltage | 40V | -- | 40V | 40V |
| Min Input Voltage | 8V | -- | 15V | 8V |
| Output Configuration | Positive | -- | Positive | Positive |
| Output Current | 5A | -- | 5A | 5A |
| Output Type | Fixed | -- | Fixed | Fixed |
| Output Voltage | 3.3V | -- | 12V | 5V |
| Synchronous Rectifier | No | -- | No | No |
| Topology | Buck | -- | Buck | Buck |
| Action |
Texas Instruments LM2678S-3.3/NOPB DC DC Switching Regulators Overview
5A, 3.3V fixed output buck converter with 82% efficiency. Operates from an 8V to 40V input voltage range, featuring a 260kHz switching frequency. This surface mount device, housed in a TO-263 package, supports a maximum output current of 5A. Designed for a wide operating temperature range of -40°C to 125°C.
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