| PartNumber | RP501K121B-TR | RP501K121A-TR | RP501K121B5-TR |
| Description | Switching Voltage Regulators Buck DC/DC Converter | Switching Voltage Regulators Buck DC/DC Converter | Switching Voltage Regulators 1A PWM/VFM Step-down DCDC Converter with Synchronous Rectifier |
| Manufacturer | Ricoh Electronics | Ricoh Electronics | Ricoh Electronics |
| Product Category | Switching Voltage Regulators | Switching Voltage Regulators | Switching Voltage Regulators |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | DFN-PLP-2527-10 | DFN-PLP-2527-10 | DFN-PLP-2527-10 |
| Output Voltage | 1.2 V | 1.2 V | - |
| Output Current | 1 A | 1 A | - |
| Number of Outputs | 1 Output | 1 Output | - |
| Input Voltage MAX | 5.5 V | 5.5 V | - |
| Topology | Buck | Buck | - |
| Input Voltage MIN | 2.5 V | 2.5 V | - |
| Switching Frequency | 2.25 MHz | 2.25 MHz | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Series | RP501K | RP501K | - |
| Packaging | Reel | Reel | Reel |
| Input Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | - |
| Operating Temperature Range | - 40 C to + 85 C | - 40 C to + 85 C | - |
| Type | DC/DC Converter | DC/DC Converter | - |
| Brand | Ricoh Electronic Devices Company | Ricoh Electronic Devices Company | Ricoh Electronic Devices Company |
| Shutdown | No Shutdown | No Shutdown | - |
| Operating Supply Current | 450 uA | 450 uA | - |
| Product Type | Switching Voltage Regulators | Switching Voltage Regulators | Switching Voltage Regulators |
| Factory Pack Quantity | 5000 | 5000 | 5000 |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | PMIC - Power Management ICs |
| Supply Voltage Min | 2.5 V | 2.5 V | - |