| PartNumber | RP122K281B-TR | RP122K251B-TR | RP122K251D-TR |
| Description | Supervisory Circuits 400 mA Low Noise and Low Supply Current LDO Regulator | Supervisory Circuits 400 mA Low Noise and Low Supply Current LDO Regulator | LDO Voltage Regulators 400 mA Low Noise and Low Supply Current LDO Regulator |
| Manufacturer | Ricoh Electronics | Ricoh Electronics | Ricoh Electronics |
| Product Category | Supervisory Circuits | Supervisory Circuits | LDO Voltage Regulators |
| RoHS | Y | Y | Y |
| Type | Low Noise | Low Noise | Low Noise |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | DFN1010-4 | DFN1010-4 | DFN1010-4 |
| Output Type | Fixed | Fixed | Fixed |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Series | R5111S | R5111S | RP122K |
| Packaging | Reel | Reel | Reel |
| Output Current | 400 mA | 400 mA | 400 mA |
| Brand | Ricoh Electronic Devices Company | Ricoh Electronic Devices Company | Ricoh Electronic Devices Company |
| Operating Supply Current | 9.5 uA | 9.5 uA | 9.5 uA |
| Product Type | Supervisory Circuits | Supervisory Circuits | LDO Voltage Regulators |
| Factory Pack Quantity | 10000 | 10000 | 10000 |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | PMIC - Power Management ICs |
| Output Voltage | - | - | 2.5 V |
| Number of Outputs | - | - | 1 Output |
| Polarity | - | - | Positive |
| Input Voltage MAX | - | - | 5.5 V |
| Input Voltage MIN | - | - | 1.9 V |
| Dropout Voltage | - | - | 0.18 V |
| Product | - | - | LDO Voltage Regulators |
| Dropout Voltage Max | - | - | 0.28 V |
| Output Voltage Range | - | - | - |
| PSRR / Ripple Rejection Typ | - | - | 65 dB |
| Voltage Regulation Accuracy | - | - | 0.8 % |
| Line Regulation | - | - | 0.02 %/V |
| Load Regulation | - | - | 13 mV |
| Pd Power Dissipation | - | - | 550 mW |