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| PartNumber | MAX639CSA+ | MAX639CPA+ | MAX639C/D |
| Description | Switching Voltage Regulators 5/3.3/3V Adjustable Step-Down | Switching Voltage Regulators 5/3.3/3V Adjustable Step-Down | Switching Voltage Regulators 5V/3.3V/3V Adjustable, High-Efficiency, Low-IQ, Step-Down DC-DC Converters |
| Manufacturer | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Category | Switching Voltage Regulators | Switching Voltage Regulators | Switching Voltage Regulators |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | Through Hole | - |
| Package / Case | SO-8 | PDIP-8 | - |
| Output Voltage | 5 V | 5 V | 5 V |
| Output Current | 225 mA | 225 mA | 225 mA |
| Number of Outputs | 1 Output | 1 Output | 1 Output |
| Input Voltage MAX | 11.5 V | 11.5 V | 11.5 V |
| Topology | Buck | Buck | Buck |
| Input Voltage MIN | 4 V | 4 V | 4 V |
| Minimum Operating Temperature | 0 C | 0 C | - |
| Maximum Operating Temperature | + 70 C | + 70 C | - |
| Series | MAX639 | MAX639 | MAX639 |
| Packaging | Tube | Tube | - |
| Type | Voltage Converter | Voltage Converter | Voltage Converter |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Type | Switching Voltage Regulators | Switching Voltage Regulators | Switching Voltage Regulators |
| Factory Pack Quantity | 100 | 50 | - |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | PMIC - Power Management ICs |
| Part # Aliases | MAX639 | MAX639 | MAX639 |
| Unit Weight | 0.017870 oz | 0.032805 oz | - |