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| Part Number | LM3477MM | LM3478MM | LM3477MMX | LM3477AMM |
|---|---|---|---|---|
| Manufacturer | National Semiconductor | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Active | Not For New Designs | Not For New Designs | Obsolete |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver |
| Function | Step-Down | Step-Up, Step-Up/Step-Down | Step-Down | Step-Down |
| Output Configuration | Positive | Positive | Positive | Positive |
| Topology | Buck, Buck-Boost | Boost, Flyback, SEPIC | Buck, Buck-Boost | Buck, Buck-Boost |
| Number of Outputs | 1 | 1 | 1 | 1 |
| Output Phases | 1 | 1 | 1 | 1 |
| Voltage - Supply (Vcc/Vdd) | 2.97V ~ 35V | 2.97V ~ 40V | 2.97V ~ 35V | 2.97V ~ 35V |
| Frequency - Switching | 500kHz | 100kHz ~ 1MHz | 500kHz | 500kHz |
| Duty Cycle (Max) | 93% | 100% | 93% | 93% |
| Synchronous Rectifier | No | No | No | No |
| Clock Sync | No | No | No | No |
| Serial Interfaces | - | - | - | - |
| Control Features | Enable | Enable, Frequency Control | Enable | Enable |
| 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 | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| Supplier Device Package | 8-VSSOP | 8-VSSOP | 8-VSSOP | 8-VSSOP |
