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| Part Number | LM2679S-3.3 | LM2679SD-3.3 | LM2679T-3.3 | LM2679SX-3.3 | LM2677S-3.3 | LM2678S-3.3 |
|---|---|---|---|---|---|---|
| Manufacturer | National Semiconductor | National Semiconductor | National Semiconductor | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Active | Obsolete | Obsolete | Obsolete | Obsolete | Active |
| Function | - | Step-Down | Step-Down | Step-Down | Step-Down | - |
| Output Configuration | - | Positive | Positive | Positive | Positive | - |
| Topology | - | Buck | Buck | Buck | Buck | - |
| Output Type | - | Fixed | Fixed | Fixed | Fixed | - |
| Number of Outputs | - | 1 | 1 | 1 | 1 | - |
| Voltage - Input (Min) | - | 8V | 8V | 8V | 8V | - |
| Voltage - Input (Max) | - | 40V | 40V | 40V | 40V | - |
| Voltage - Output (Min/Fixed) | - | 3.3V | 3.3V | 3.3V | 3.3V | - |
| Voltage - Output (Max) | - | - | - | - | - | - |
| Current - Output | - | 5A | 5A | 5A | 5A | - |
| Frequency - Switching | - | 260kHz | 260kHz | 260kHz | 260kHz | - |
| Synchronous Rectifier | - | No | No | No | No | - |
| Operating Temperature | - | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | - |
| Mounting Type | - | Surface Mount | Through Hole | Surface Mount | Surface Mount | - |
| Package / Case | - | 14-VDFN Exposed Pad | TO-220-7 Formed Leads | TO-263-8, D²Pak (7 Leads + Tab), TO-263CA | TO-263-8, D²Pak (7 Leads + Tab), TO-263CA | - |
| Supplier Device Package | - | 14-VSON (6x5) | TO-220-7 | DDPAK/TO-263-7 | DDPAK/TO-263-7 | - |
