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| Part Number | LP3991TLX-1.55/NOPB | LP3991TL-1.55/NOPB | LP3991TLX-1.5/NOPB |
|---|---|---|---|
| Manufacturer | Texas Instruments | National Semiconductor | Texas Instruments |
| Product Status | Obsolete | Active | Active |
| Output Configuration | Positive | Positive | Positive |
| Output Type | Fixed | Fixed | Fixed |
| Number of Regulators | 1 | 1 | 1 |
| Voltage - Input (Max) | 4V | 4V | 4V |
| Voltage - Output (Min/Fixed) | 1.55V | 1.55V | 1.5V |
| Voltage - Output (Max) | - | - | - |
| Voltage Dropout (Max) | 0.16V @ 300mA | 0.16V @ 300mA | 0.16V @ 300mA |
| Current - Output | 300mA | 300mA | 300mA |
| Current - Quiescent (Iq) | 100 µA | 100 µA | 100 µA |
| Current - Supply (Max) | 225 µA | 225 µA | 225 µA |
| PSRR | 65dB (1kHz) | 65dB (1kHz) | 65dB (1kHz) |
| Control Features | Enable | Enable | Enable |
| Protection Features | Over Temperature, Short Circuit | Over Temperature, Short Circuit | Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 4-WFBGA, DSBGA | 4-WFBGA, DSBGA | 4-WFBGA, DSBGA |
| Supplier Device Package | 4-DSBGA (1x1) | 4-DSBGA (1x1) | 4-DSBGA (1x1) |
