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• Efficiency Up to 92%
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• Simple and Easy to Design Using Off-the-ShelfExternal Components
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• 120-mΩ DMOS Output Switch
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• 3.3-V, 5-V, and 12-V Fixed Output and Adjustable(1.2 V to 37 V) Versions
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• 50-μA Standby Current When Switched OFF
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• ±2% Maximum Output Tolerance Over Full Lineand Load Conditions
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• Wide Input Voltage Range: 8 V to 40 V
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• 260-kHz Fixed Frequency Internal Oscillator
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• −40 to 125°C Operating Junction TemperatureRange
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• Create a Custom Design Using the LM2678 Withthe WEBENCH® Power Designer
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| CATALOG |
LM2678S-5.0/NOPB Country of Origin
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LM2678S-5.0/NOPB Parametric Info
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LM2678S-5.0/NOPB Package Info
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LM2678S-5.0/NOPB Manufacturing Info
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LM2678S-5.0/NOPB Packaging Info
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LM2678S-5.0/NOPB ECAD Models
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LM2678S-5.0/NOPB Functional Block Diagram
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LM2678S-5.0/NOPB Applications
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COUNTRY OF ORIGIN
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Malaysia
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PARAMETRIC INFO
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| Type |
Step Down |
| Number of Outputs |
1 |
| Minimum Input Voltage (V) |
8 |
| Maximum Input Voltage (V) |
40 |
| Output Voltage (V) |
5 |
| Maximum Output Current (A) |
5 |
| Minimum Operating Temperature (°C) |
-40 |
| Maximum Operating Temperature (°C) |
125 |
| Switching Frequency (kHz) |
260(Typ) |
| Efficiency (%) |
84(Typ) |
| Switching Regulator |
Yes |
| Operating Supply Voltage (V) |
8 to 40 |
| Output Type |
Fixed |
| Typical Quiescent Current (uA) |
4200 |
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PACKAGE INFO
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| Supplier Package |
TO-263 |
| Basic Package Type |
Lead-Frame SMT |
| Pin Count |
8 |
| Lead Shape |
Gull-wing |
| PCB |
7 |
| Tab |
Tab |
| Pin Pitch (mm) |
1.27 |
| Package Length (mm) |
10.41(Max) |
| Package Width (mm) |
9.4(Max) |
| Package Height (mm) |
4.65(Max) |
| Package Diameter (mm) |
N/R |
| Seated Plane Height (mm) |
4.96(Max) |
| Mounting |
Surface Mount |
| Package Weight (g) |
N/A |
| Package Material |
Plastic |
| Package Description |
Double Deca Watt Package |
| Package Family Name |
TO-263 |
| Package Outline |
Link to Datasheet |
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MANUFACTURING INFO
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| MSL |
3 |
| Maximum Reflow Temperature (°C) |
245 |
| Reflow Solder Time (Sec) |
30 |
| Number of Reflow Cycle |
3 |
| Reflow Temp. Source |
Link to Datasheet |
| Maximum Wave Temperature (°C) |
N/R |
| Wave Solder Time (Sec) |
N/R |
| Lead Finish(Plating) |
Matte Sn |
| Under Plating Material |
N/A |
| Terminal Base Material |
Cu Alloy |
| Number of Wave Cycles |
N/R |
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PACKAGING INFO
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| Packaging |
Tube |
| Quantity Of Packaging |
45 |
| Packaging Document |
Link to Datasheet |
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ECAD MODELS
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FUNCTIONAL BLOCK DIAGRAM
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APPLICATIONS
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• Simple-to-Design, High Efficiency (>90%) StepDown Switching Regulators
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• Efficient System Preregulator for Linear VoltageRegulators
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• Battery Chargers
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