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| Part Number | LP2954AISX | LP2954ISX | LP2957AISX | LP2954AIMX | LP2954AIS |
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | National Semiconductor | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Obsolete | Active | Obsolete | Obsolete | Obsolete |
| Output Configuration | Positive | Positive | Positive | Positive | Positive |
| Output Type | Fixed | Fixed | Fixed | Adjustable | Fixed |
| Number of Regulators | 1 | 1 | 1 | 1 | 1 |
| Voltage - Input (Max) | 30V | 30V | 30V | 30V | 30V |
| Voltage - Output (Min/Fixed) | 5V | 5V | 5V | 1.23V | 5V |
| Voltage - Output (Max) | - | - | - | 29V | - |
| Voltage Dropout (Max) | 0.8V @ 250mA | 0.8V @ 250mA | 0.8V @ 250mA | 0.8V @ 250mA | 0.8V @ 250mA |
| Current - Output | 250mA | 250mA | 250mA | 250mA | 250mA |
| Current - Quiescent (Iq) | 150 µA | 150 µA | 200 µA | 150 µA | 150 µA |
| Current - Supply (Max) | 33 mA | 33 mA | 33 mA | 33 mA | 33 mA |
| PSRR | - | - | - | - | - |
| Control Features | Enable | Enable | Enable | Enable | Enable |
| Protection Features | Over Current, Over Temperature, Reverse Polarity | Over Current, Over Temperature, Reverse Polarity | Over Current, Over Temperature, Reverse Polarity | Over Current, Over Temperature, Reverse Polarity | Over Current, Over Temperature, Reverse Polarity |
| Operating Temperature | -40°C ~ 125°C | -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 | Surface Mount |
| Package / Case | TO-263-4, D²Pak (3 Leads + Tab), TO-263AA | TO-263-4, D²Pak (3 Leads + Tab), TO-263AA | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | 8-SOIC (0.154", 3.90mm Width) | TO-263-4, D²Pak (3 Leads + Tab), TO-263AA |
| Supplier Device Package | DDPAK/TO-263-3 | DDPAK/TO-263-3 | DDPAK/TO-263-5 | 8-SOIC | DDPAK/TO-263-3 |
