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| Part Number | MAX640ESA+ | MAX680ESA+ | MAX660ESA+ | MAX640ESA+T | MAX630ESA+ | MAX640CSA+ | MAX640EPA+ | MAX640ESA |
|---|---|---|---|---|---|---|---|---|
| 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 | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Product Status | Active | Active | Active | Active | Active | Active | Obsolete | Obsolete |
| Function | Step-Down | Ratiometric | Ratiometric | Step-Down | Step-Up | Step-Down | Step-Down | Step-Down |
| Output Configuration | Positive | Positive and Negative (Dual Rail) | Positive or Negative | Positive | Positive | Positive | Positive | Positive |
| Topology | Buck | Charge Pump | Charge Pump | Buck | Boost | Buck | Buck | Buck |
| Output Type | Adjustable (Fixed) | Fixed | Fixed | Adjustable (Fixed) | Adjustable | Adjustable (Fixed) | Adjustable (Fixed) | Adjustable (Fixed) |
| Number of Outputs | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage - Input (Min) | 4V | 2V | 1.5V | 4V | 2.2V | 4V | 4V | 4V |
| Voltage - Input (Max) | 11.5V | 6V | 5.5V | 11.5V | 16.5V | 11.5V | 11.5V | 11.5V |
| Voltage - Output (Min/Fixed) | 1.3V (3.3V) | ±2Vin | -Vin, 2Vin | 1.3V (3.3V) | 2.2V | 1.3V (3.3V) | 1.3V (3.3V) | 1.3V (3.3V) |
| Voltage - Output (Max) | 11.5V | - | - | 11.5V | 18V (Switch) | 11.5V | 11.5V | 11.5V |
| Current - Output | 225mA | 10mA | 100mA | 225mA | 525mA (Switch) | 225mA | 225mA | 225mA |
| Frequency - Switching | - | 8kHz | 10kHz, 80kHz | - | 40kHz | - | - | - |
| Synchronous Rectifier | No | No | No | 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 (TA) | -40°C ~ 85°C (TA) | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Through Hole | 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) | 8-SOIC (0.154", 3.90mm Width) | 8-DIP (0.300", 7.62mm) | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-PDIP | 8-SOIC |
