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| Part Number | LP3891EMRX-1.8 | LP3892EMRX-1.8 | LP3891EMR-1.8 | LP3891EMRX-1.2 |
|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | National Semiconductor | Texas Instruments |
| Product Status | Obsolete | Discontinued at Digi-Key | Obsolete | Obsolete |
| Output Configuration | Positive | Positive | Positive | Positive |
| Output Type | Fixed | Fixed | Fixed | Fixed |
| Number of Regulators | 1 | 1 | 1 | 1 |
| Voltage - Input (Max) | 5.5V | 5.5V | 5.5V | 5.5V |
| Voltage - Output (Min/Fixed) | 1.8V | 1.8V | 1.8V | 1.2V |
| Voltage - Output (Max) | - | - | - | - |
| Voltage Dropout (Max) | 0.43V @ 800mA | 0.55V @ 1.5A | 0.43V @ 800mA | 0.43V @ 800mA |
| Current - Output | 800mA | 1.5A | 800mA | 800mA |
| Current - Quiescent (Iq) | 30 µA | 30 µA | 30 µA | 30 µA |
| Current - Supply (Max) | 8 mA | 8 mA | 8 mA | 8 mA |
| PSRR | 80dB ~ 65dB (120Hz ~ 1kHz) | 80dB ~ 65dB (120Hz ~ 1kHz) | 80dB ~ 65dB (120Hz ~ 1kHz) | 80dB ~ 65dB (120Hz ~ 1kHz) |
| Control Features | Enable | Enable | Enable | Enable |
| Protection Features | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | Over Current, Over Temperature, Short Circuit | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) | Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO) |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-PowerSOIC (0.154", 3.90mm Width) | 8-PowerSOIC (0.154", 3.90mm Width) | 8-PowerSOIC (0.154", 3.90mm Width) | 8-PowerSOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SO PowerPad | 8-SO PowerPad | 8-SO PowerPad | 8-SO PowerPad |
