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| Part Number | LM2577SX-12/NOPB | LM2587SX-12/NOPB | LM2577SX-15/NOPB | LM2577S-12/NOPB |
|---|---|---|---|---|
| Manufacturer | National Semiconductor | National Semiconductor | Texas Instruments | Texas Instruments |
| Product Status | Active | Active | Obsolete | Active |
| Function | - | Step-Up, Step-Up/Step-Down | Step-Up, Step-Up/Step-Down | Step-Up, Step-Up/Step-Down |
| Output Configuration | - | Positive | Positive or Negative | Positive or Negative |
| Topology | - | Boost, Flyback, Forward Converter | Boost, Flyback, Forward Converter | Boost, Flyback, Forward Converter |
| Output Type | - | Fixed | Fixed | Fixed |
| Number of Outputs | - | 1 | 1 | 1 |
| Voltage - Input (Min) | - | 4V | 3.5V | 3.5V |
| Voltage - Input (Max) | - | 40V | 40V | 40V |
| Voltage - Output (Min/Fixed) | - | 12V | 15V | 12V |
| Voltage - Output (Max) | - | - | - | - |
| Current - Output | - | 5A (Switch) | 3A (Switch) | 3A (Switch) |
| Frequency - Switching | - | 100kHz | 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 | - | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | - | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA |
| Supplier Device Package | - | DDPAK/TO-263-5 | DDPAK/TO-263-5 | DDPAK/TO-263-5 |
