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| Part Number | LM2577T-ADJ/LB03 | LM2577T-ADJ/LF03 | LM2576T-ADJ/LB03 | LM2577T-ADJ/LB02 |
|---|---|---|---|---|
| Manufacturer | National Semiconductor | Texas Instruments | National Semiconductor | Texas Instruments |
| Product Status | Active | Active | Active | Obsolete |
| Function | - | Step-Up, Step-Up/Step-Down | Step-Down | Step-Up, Step-Up/Step-Down |
| Output Configuration | - | Positive | Positive or Negative | Positive |
| Topology | - | Boost, Flyback, Forward Converter | Buck | Boost, Flyback, Forward Converter |
| Output Type | - | Adjustable | Adjustable | Adjustable |
| Number of Outputs | - | 1 | 1 | 1 |
| Voltage - Input (Min) | - | 3.5V | 7V | 3.5V |
| Voltage - Input (Max) | - | 40V | 40V | 40V |
| Voltage - Output (Min/Fixed) | - | 1.23V | 1.23V | 1.23V |
| Voltage - Output (Max) | - | 60V (Switch) | 37V | 60V (Switch) |
| Current - Output | - | 3A (Switch) | 3A | 3A (Switch) |
| Frequency - Switching | - | 52kHz | 52kHz | 52kHz |
| Synchronous Rectifier | - | No | No | No |
| Operating Temperature | - | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) |
| Mounting Type | - | Through Hole | Through Hole | Through Hole |
| Package / Case | - | TO-220-5 Formed Leads | TO-220-5 | TO-220-5 Formed Leads |
| Supplier Device Package | - | TO-220-5 | TO-220-5 | TO-220-5 |
