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| Part Number | MAX1681ESA+ | MAX1681ESA+T | MAX1688ESA+ | MAX1687ESA+ | MAX1680ESA+ | MAX1681ESA |
|---|---|---|---|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Product Status | Active | Active | Obsolete | Active | Active | Obsolete |
| Function | Ratiometric | Ratiometric | Step-Up | - | Ratiometric | Ratiometric |
| Output Configuration | Positive or Negative | Positive or Negative | Positive | - | Positive or Negative | Positive or Negative |
| Topology | Charge Pump | Charge Pump | Boost | - | Charge Pump | Charge Pump |
| Output Type | Fixed | Fixed | Adjustable | - | Fixed | Fixed |
| Number of Outputs | 1 | 1 | 1 | - | 1 | 1 |
| Voltage - Input (Min) | 2V | 2V | 2.7V | - | 2V | 2V |
| Voltage - Input (Max) | 5.5V | 5.5V | 6V | - | 5.5V | 5.5V |
| Voltage - Output (Min/Fixed) | -Vin, 2Vin | -Vin, 2Vin | 1.25V | - | -Vin, 2Vin | -Vin, 2Vin |
| Voltage - Output (Max) | - | - | 6V | - | - | - |
| Current - Output | 125mA | 125mA | 730mA (Switch) | - | 125mA | 125mA |
| Frequency - Switching | 500kHz, 1MHz | 500kHz, 1MHz | 1MHz | - | 125kHz, 250kHz | 500kHz, 1MHz |
| Synchronous Rectifier | No | No | Yes | - | No | No |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | - | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | - | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | - | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC | 8-SOIC | 8-SOIC | - | 8-SOIC | 8-SOIC |
