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| PartNumber | A4490 | A4490EES | A4490EES-T |
| Description | IC REG BUCK ADJ TRPL 20QFN | ||
| Manufacturer | Allegro MicroSystems, LLC | Allegro MicroSystems, LLC | - |
| Product Category | PMIC - Voltage Regulators - DC DC Switching Regulators | PMIC - Voltage Regulators - DC DC Switching Regulators | - |
| Series | - | - | - |
| Packaging | Tube Alternate Packaging | Tube Alternate Packaging | - |
| Package Case | 20-WFQFN Exposed Pad | 20-WFQFN Exposed Pad | - |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | - |
| Mounting Type | Surface Mount | Surface Mount | - |
| Output Type | Adjustable | Adjustable | - |
| Function | Step-Down | Step-Down | - |
| Supplier Device Package | 20-QFN (4x4) | 20-QFN (4x4) | - |
| Number of Outputs | 3 | 3 | - |
| Topology | Buck | Buck | - |
| Frequency Switching | 550kHz | 550kHz | - |
| Current Output | - | - | - |
| Output Configuration | Positive | Positive | - |
| Voltage Output Min Fixed | 0.8V | 0.8V | - |
| Voltage Output Max | 30.6V | 30.6V | - |
| Synchronous Rectifier | No | No | - |
| Voltage Input Min | 4.5V | 4.5V | - |
| Voltage Input Max | 34V | 34V | - |