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| PartNumber | R1800K021A-TR | R1800K022A-TR | R1800K020A-TR |
| Description | Switching Voltage Regulators 144 nA IQ Low Quiescent Current Buck DC/DC Converter for Energy Harvester | Switching Voltage Regulators 144 nA IQ Low Quiescent Current Buck DC/DC Converter for Energy Harvester | Switching Voltage Regulators 144 nA IQ Low Quiescent Current Buck DC/DC Converter for Energy Harvester |
| Manufacturer | Ricoh Electronics | Ricoh Electronics | Ricoh Electronics |
| Product Category | Switching Voltage Regulators | Switching Voltage Regulators | Switching Voltage Regulators |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | DFN-PLP-2730-12 | DFN-PLP-2730-12 | DFN-PLP-2730-12 |
| Output Voltage | 2 V to 4.5 V | 2 V to 4.5 V | 2 V to 4.5 V |
| Output Current | 1 mA | 1 mA | 1 mA |
| Number of Outputs | 1 Output | 1 Output | 1 Output |
| Input Voltage MAX | 5.5 V | 5.5 V | 5.5 V |
| Topology | Buck | Buck | Buck |
| Input Voltage MIN | 2 V | 2 V | 2 V |
| Series | R1800K | R1800K | R1800K |
| Packaging | Reel | Reel | Reel |
| Input Voltage | 2 V to 5.5 V | 2 V to 5.5 V | 2 V to 5.5 V |
| Type | Ultra-Low Power Consumption Step-Down DC/DC Converter | Ultra-Low Power Consumption Step-Down DC/DC Converter | Ultra-Low Power Consumption Step-Down DC/DC Converter |
| Brand | Ricoh Electronic Devices Company | Ricoh Electronic Devices Company | Ricoh Electronic Devices Company |
| Shutdown | No Shutdown | No Shutdown | No Shutdown |
| Operating Supply Current | 144 nA | 144 nA | 144 nA |
| 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 V | 2 V | 2 V |