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| Part Number | LM2577T-ADJ/LF03 | LM2587T-ADJ/LF03 | LM2576T-ADJ/LF03 | LM2577T-ADJ/LB03 | LM2577T-ADJ/LF02 |
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | National Semiconductor | Texas Instruments |
| Product Status | Active | Obsolete | Active | Active | Obsolete |
| Function | Step-Up, Step-Up/Step-Down | Step-Up, Step-Up/Step-Down | Step-Down | - | Step-Up, Step-Up/Step-Down |
| Output Configuration | Positive | Positive | Positive | - | Positive |
| Topology | Boost, Flyback, Forward Converter | Boost, Flyback, Forward Converter | Buck | - | Boost, Flyback, Forward Converter |
| Output Type | Adjustable | Adjustable | Adjustable | - | Adjustable |
| Number of Outputs | 1 | 1 | 1 | - | 1 |
| Voltage - Input (Min) | 3.5V | 4V | 4V | - | 3.5V |
| Voltage - Input (Max) | 40V | 40V | 40V | - | 40V |
| Voltage - Output (Min/Fixed) | 1.23V | 1.23V | 1.23V | - | 1.23V |
| Voltage - Output (Max) | 60V (Switch) | 60V | 37V | - | 60V (Switch) |
| Current - Output | 3A (Switch) | 5A (Switch) | 3A | - | 3A (Switch) |
| Frequency - Switching | 52kHz | 100kHz | 52kHz | - | 52kHz |
| 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 | Through Hole | Through Hole | Through Hole | - | Through Hole |
| Package / Case | TO-220-5 Formed Leads | TO-220-5 Formed Leads | TO-220-5 Formed Leads | - | TO-220-5 Formed Leads |
| Supplier Device Package | TO-220-5 | TO-220-5 | TO-220-5 | - | TO-220-5 |
