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| Part Number | LM2991T | LM2941T | LM2991S |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Not For New Designs | Not For New Designs | Not For New Designs |
| Output Configuration | Negative | Positive | Negative |
| Output Type | Adjustable | Adjustable | Adjustable |
| Number of Regulators | 1 | 1 | 1 |
| Voltage - Input (Max) | -26V | 26V | -26V |
| Voltage - Output (Min/Fixed) | -3V | 5V | -3V |
| Voltage - Output (Max) | -24V | 20V | -24V |
| Voltage Dropout (Max) | 1V @ 1A | 1V @ 1A | 1V @ 1A |
| Current - Output | 1A | 1A | 1A |
| Current - Quiescent (Iq) | 0.7 mA | 10 mA | 0.7 mA |
| Current - Supply (Max) | 5 mA | 15 mA | 5 mA |
| PSRR | 60dB (1kHz) | - | 60dB (1kHz) |
| Control Features | Enable | Enable | Enable |
| Protection Features | Over Temperature, Short Circuit | Over Temperature, Reverse Polarity, Short Circuit | Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Through Hole | Through Hole | Surface Mount |
| Package / Case | TO-220-5 | TO-220-5 | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA |
| Supplier Device Package | TO-220-5 | TO-220-5 | DDPAK/TO-263-5 |
