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| Part Number | MAX634ESA+ | MAX639ESA+ | MAX634ESA+T | MAX630ESA+ | MAX634CSA+ | MAX634EPA+ | MAX634ESA |
|---|---|---|---|---|---|---|---|
| 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 |
| Product Status | Last Time Buy | Active | Last Time Buy | Active | Last Time Buy | Last Time Buy | Obsolete |
| Function | Step-Up/Step-Down | Step-Down | Step-Up/Step-Down | Step-Up | Step-Up/Step-Down | - | Step-Up/Step-Down |
| Output Configuration | Negative | Positive | Negative | Positive | Negative | - | Negative |
| Topology | Buck-Boost | Buck | Buck-Boost | Boost | Buck-Boost | - | Buck-Boost |
| Output Type | Adjustable | Adjustable (Fixed) | Adjustable | Adjustable | Adjustable | - | Adjustable |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | - | 1 |
| Voltage - Input (Min) | 2.6V | 4V | 2.6V | 2.2V | 2.6V | - | 2.6V |
| Voltage - Input (Max) | 16.5V | 11.5V | 16.5V | 16.5V | 16.5V | - | 16.5V |
| Voltage - Output (Min/Fixed) | -2.6V | 1.3V (5V) | -2.6V | 2.2V | -2.6V | - | -2.6V |
| Voltage - Output (Max) | -20V | 11.5V | -20V | 18V (Switch) | -20V | - | -20V |
| Current - Output | 150mA | 225mA | 150mA | 525mA (Switch) | 150mA | - | 150mA |
| Frequency - Switching | 100Hz ~ 75kHz | - | 100Hz ~ 75kHz | 40kHz | 100Hz ~ 75kHz | - | 100Hz ~ 75kHz |
| Synchronous Rectifier | 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) | 0°C ~ 70°C (TA) | - | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | 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) | - | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | - | 8-SOIC |
