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| Part Number | LM3485MMX | LM3489MMX | LM3488MMX | LM3485MM |
|---|---|---|---|---|
| Manufacturer | National Semiconductor | National Semiconductor | Texas Instruments | National Semiconductor |
| Product Status | Active | Active | Obsolete | Active |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver |
| Function | Step-Down | Step-Down | Step-Up, Step-Up/Step-Down | Step-Down |
| Output Configuration | Positive | Positive | Positive | Positive |
| Topology | Buck | Buck | Boost, Flyback, SEPIC | Buck |
| Number of Outputs | 1 | 1 | 1 | 1 |
| Output Phases | 1 | 1 | 1 | 1 |
| Voltage - Supply (Vcc/Vdd) | 4.5V ~ 35V | 4.5V ~ 35V | 2.97V ~ 40V | 4.5V ~ 35V |
| Frequency - Switching | 50kHz ~ 1MHz | Up to 1MHz | 100kHz ~ 1MHz | 50kHz ~ 1MHz |
| Duty Cycle (Max) | 100% | 100% | 100% | 100% |
| Synchronous Rectifier | No | No | No | No |
| Clock Sync | No | No | Yes | No |
| Serial Interfaces | - | - | - | - |
| Control Features | Enable | Current Limit, Enable | Enable, Frequency Control | 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 |
