| Part Number | LT1521CST-3#TRPBF | LT1521IST-3#TRPBF | 
|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | 
| Category | PMIC - Voltage Regulators - Linear | PMIC - Voltage Regulators - Linear | 
|   |   | |
| Product Status | Active | Active | 
| Output Configuration | Positive | Positive | 
| Output Type | Fixed | Fixed | 
| Number of Regulators | 1 | 1 | 
| Voltage - Input (Max) | 20V | 20V | 
| Voltage - Output (Min/Fixed) | 3V | 3V | 
| Voltage - Output (Max) | - | - | 
| Voltage Dropout (Max) | 0.75V @ 300mA | 0.75V @ 300mA | 
| Current - Output | 300mA | 300mA | 
| Current - Quiescent (Iq) | 25 µA | 25 µA | 
| Current - Supply (Max) | 12 mA | 12 mA | 
| PSRR | 58dB (120Hz) | 58dB (120Hz) | 
| Control Features | Enable | Enable | 
| Protection Features | Over Current, Over Temperature, Reverse Polarity | Over Current, Over Temperature, Reverse Polarity | 
| Operating Temperature | 0°C ~ 125°C | -40°C ~ 125°C | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | TO-261-4, TO-261AA | TO-261-4, TO-261AA | 
| Supplier Device Package | SOT-223-3 | SOT-223-3 |