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| PartNumber | AST1S31PUR | AST1S31HF | AST1S31 |
| Description | Switching Voltage Regulators 3 A DC step-down switching regulator | Switching Voltage Regulators Up to 4 V, 3 A step-down 2.3 MHz switching regulator for automotive applications | |
| Manufacturer | STMicroelectronics | STMicroelectronics | - |
| Product Category | Switching Voltage Regulators | Switching Voltage Regulators | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | VFDFPN-8 | VFDFPN-8 | - |
| Output Voltage | 2.8 V to 4 V | 0.8 V to 4 V | - |
| Output Current | 3 A | 3 A | - |
| Number of Outputs | 1 Output | 1 Output | - |
| Input Voltage MAX | 4 V | 4 V | - |
| Topology | Buck | Buck | - |
| Input Voltage MIN | 2.8 V | 2.8 V | - |
| Switching Frequency | 1.5 MHz | 2.3 MHz | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 125 C | + 125 C | - |
| Qualification | AEC-Q100 | AEC-Q100 | - |
| Series | AST1S31 | AST1S31HF | - |
| Packaging | Reel | Reel | - |
| Input Voltage | 2.8 V to 4 V | 2.8 V to 4 V | - |
| Operating Temperature Range | - 40 C to + 125 C | - 40 C to + 125 C | - |
| Quiescent Current | 630 uA | 630 uA | - |
| Type | Switching Regulator | Switching Regulator | - |
| Brand | STMicroelectronics | STMicroelectronics | - |
| Shutdown | Shutdown | Shutdown | - |
| Development Kit | - | STEVAL-ISA160V1 | - |
| Load Regulation | - | - | - |
| Moisture Sensitive | Yes | Yes | - |
| Operating Supply Current | - | - | - |
| Product Type | Switching Voltage Regulators | Switching Voltage Regulators | - |
| Factory Pack Quantity | 3000 | 3000 | - |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | - |
| Supply Voltage Min | 2.8 V | 2.8 V | - |
| RoHS | - | Y | - |
| Unit Weight | - | 0.000988 oz | - |