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| PartNumber | LD2981CU33TR | LD2981CU50TR | LD2981CU18TR |
| Description | LDO Voltage Regulators 3.3V 100mA Positive | LDO Voltage Regulators 5.0V 100mA Positive | IC REG LINEAR 1.8V 100MA SOT89-3 |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | LDO Voltage Regulators | LDO Voltage Regulators | PMIC - Voltage Regulators - Linear |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | SOT-89-3 | SOT-89-3 | - |
| Output Voltage | 3.3 V | 5 V | - |
| Output Current | 100 mA | 100 mA | - |
| Number of Outputs | 1 Output | 1 Output | - |
| Polarity | Positive | Positive | - |
| Quiescent Current | 100 uA | 100 uA | - |
| Input Voltage MAX | 16 V | 16 V | - |
| Input Voltage MIN | 2.5 V | 2.5 V | - |
| Output Type | Fixed | Fixed | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 125 C | + 125 C | - |
| Dropout Voltage | 0.001 V | 0.001 V | - |
| Series | LD2981 | LD2981 | - |
| Packaging | Reel | Reel | Tape & Reel (TR) |
| Height | 1.6 mm | 1.6 mm | - |
| Length | 4.6 mm | 4.6 mm | - |
| Width | 2.6 mm | 2.6 mm | - |
| Brand | STMicroelectronics | STMicroelectronics | - |
| Dropout Voltage Max | 375 mV | 375 mV | - |
| Voltage Regulation Accuracy | 1.25 % | 1.25 % | - |
| Ib Input Bias Current | 80 uA | 80 uA | - |
| Line Regulation | 0.014 % / V | 0.014 % / V | - |
| Load Regulation | - 5 mV | - 5 mV | - |
| Product Type | LDO Voltage Regulators | LDO Voltage Regulators | - |
| Factory Pack Quantity | 2500 | 2500 | - |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | - |
| Unit Weight | 0.004603 oz | 0.004603 oz | - |
| Package Case | - | - | TO-243AA |
| Operating Temperature | - | - | -40°C ~ 125°C |
| Mounting Type | - | - | Surface Mount |
| Supplier Device Package | - | - | SOT-89-3 |
| Voltage Input | - | - | 2.5 V ~ 16 V |
| Current Output | - | - | 100mA |
| Voltage Output | - | - | 1.8V |
| Regulator Topology | - | - | Positive Fixed |
| Voltage Dropout Typical | - | - | - |
| Number of Regulators | - | - | 1 |
| Current Limit Min | - | - | - |