| PartNumber | ST1S40IPHR | ST1S40IPUR |
| Description | Switching Voltage Regulators 3A DC Step-Down 4.0V to 18V 850 kHz | Switching Voltage Regulators 4A Peak Step-Down 4.0V to 18V 850 kHz |
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Product Category | Switching Voltage Regulators | Switching Voltage Regulators |
| RoHS | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT |
| Package / Case | HSOP-8 | VFQFPN-8 |
| Output Voltage | Adjustable | 800 mV to 4 V |
| Output Current | 3 A | 4 A |
| Input Voltage MAX | 18 V | 18 V |
| Topology | Buck | Buck |
| Switching Frequency | 850 kHz | 850 kHz |
| Series | ST1S40 | ST1S40 |
| Packaging | Reel | Reel |
| Type | Voltage Converter | Step Down Regulator |
| Brand | STMicroelectronics | STMicroelectronics |
| Moisture Sensitive | Yes | - |
| Product Type | Switching Voltage Regulators | Switching Voltage Regulators |
| Factory Pack Quantity | 2500 | 4500 |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs |
| Unit Weight | 0.008113 oz | - |