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| Part Number | MAX639EPA+ | MAX639ESA+ | MAX619EPA+ | MAX630EPA+ | MAX634EPA+ | MAX639CPA+ |
|---|---|---|---|---|---|---|
| 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 | Last Time Buy | Active | Obsolete | Active | Last Time Buy | Last Time Buy |
| Function | Step-Down | Step-Down | Step-Up | Step-Up | - | Step-Down |
| Output Configuration | Positive | Positive | Positive | Positive | - | Positive |
| Topology | Buck | Buck | Charge Pump | Boost | - | Buck |
| Output Type | Adjustable (Fixed) | Adjustable (Fixed) | Fixed | Adjustable | - | Adjustable (Fixed) |
| Number of Outputs | 1 | 1 | 1 | 1 | - | 1 |
| Voltage - Input (Min) | 4V | 4V | 2V | 2.2V | - | 4V |
| Voltage - Input (Max) | 11.5V | 11.5V | 3.6V | 16.5V | - | 11.5V |
| Voltage - Output (Min/Fixed) | 1.3V (5V) | 1.3V (5V) | 5V | 2.2V | - | 1.3V (5V) |
| Voltage - Output (Max) | 11.5V | 11.5V | - | 18V (Switch) | - | 11.5V |
| Current - Output | 225mA | 225mA | 50mA | 525mA (Switch) | - | 225mA |
| Frequency - Switching | - | - | 500kHz | 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 (TA) | - | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole | Surface Mount | Through Hole | Through Hole | - | Through Hole |
| Package / Case | 8-DIP (0.300", 7.62mm) | 8-SOIC (0.154", 3.90mm Width) | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | - | 8-DIP (0.300", 7.62mm) |
| Supplier Device Package | 8-PDIP | 8-SOIC | 8-PDIP | 8-PDIP | - | 8-PDIP |
