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| Part Number | LM2661MMX/NOPB | LM2661MX/NOPB | LM2621MMX/NOPB | LM2660MMX/NOPB | LM2661MM/NOPB |
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Obsolete | Obsolete | Active | Discontinued at Digi-Key | Obsolete |
| Function | Ratiometric | Ratiometric | Step-Up, Step-Up/Step-Down | Ratiometric | Ratiometric |
| Output Configuration | Positive or Negative | Positive or Negative | Positive | Positive or Negative | Positive or Negative |
| Topology | Charge Pump | Charge Pump | Boost, SEPIC | Charge Pump | Charge Pump |
| Output Type | Fixed | Fixed | Adjustable | Fixed | Fixed |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 |
| Voltage - Input (Min) | 1.5V | 1.5V | 1.2V | 1.5V | 1.5V |
| Voltage - Input (Max) | 5.5V | 5.5V | 14V | 5.5V | 5.5V |
| Voltage - Output (Min/Fixed) | -Vin, 2Vin, Vin/2 | -Vin, 2Vin, Vin/2 | 1.24V | -Vin, 2Vin, Vin/2 | -Vin, 2Vin, Vin/2 |
| Voltage - Output (Max) | - | - | 14V | - | - |
| Current - Output | 100mA | 100mA | 2.85A (Switch) | 100mA | 100mA |
| Frequency - Switching | 5kHz, 40kHz | 5kHz, 40kHz | 300kHz ~ 2MHz | 5kHz, 40kHz | 5kHz, 40kHz |
| Synchronous Rectifier | No | No | No | No | No |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TJ) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-SOIC (0.154", 3.90mm 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-SOIC | 8-VSSOP | 8-VSSOP | 8-VSSOP |
