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| Part Number | LM2677T-ADJ | LM2678T-ADJ | LM2679T-ADJ | LM2676T-ADJ | LM2677S-ADJ |
|---|---|---|---|---|---|
| Manufacturer | National Semiconductor | Texas Instruments | National Semiconductor | Texas Instruments | Texas Instruments |
| Product Status | Active | Not For New Designs | Active | Not For New Designs | Not For New Designs |
| Function | Step-Down | Step-Down | Step-Down | Step-Down | Step-Down |
| Output Configuration | Positive | Positive | Positive | Positive | Positive |
| Topology | Buck | Buck | Buck | Buck | Buck |
| Output Type | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 |
| Voltage - Input (Min) | 8V | 8V | 8V | 8V | 8V |
| Voltage - Input (Max) | 40V | 40V | 40V | 40V | 40V |
| Voltage - Output (Min/Fixed) | 1.2V | 1.21V | 1.21V | 1.2V | 1.21V |
| Voltage - Output (Max) | 37V | 37V | 37V | 37V | 37V |
| Current - Output | 5A | 5A | 5A | 3A | 5A |
| Frequency - Switching | 260kHz | 260kHz | 260kHz | 260kHz | 260kHz |
| Synchronous Rectifier | No | 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) | -40°C ~ 125°C (TJ) |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Surface Mount |
| Package / Case | TO-220-7 Formed Leads | TO-220-7 Formed Leads | TO-220-7 Formed Leads | TO-220-7 Formed Leads | TO-263-8, D²Pak (7 Leads + Tab), TO-263CA |
| Supplier Device Package | TO-220-7 | TO-220-7 | TO-220-7 | TO-220-7 | DDPAK/TO-263-7 |
