# LM2991T/LF03 National Semiconductor | Integrated Circuits (ICs) | DigiKey Marketplace

**Manufacturer:** National Semiconductor  
**MPN:** `LM2991T/LF03`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | National Semiconductor |
| Manufacturer name | National Semiconductor |
| Manufacturer | National Semiconductor |
| CategoryL1 | Integrated Circuits (ICs) |
| CategoryL2 | Power Management (PMIC) |
| CategoryL3 | Voltage Regulators - Linear |
| Extra Product Name | LM2991T/LF03 National Semiconductor \| Integrated Circuits (ICs) \| DigiKey Marketplace |
| atoms | 1 |
| extraShipping | 12.0 |
| moq | 1 |
| MPN | LM2991T/LF03 |
| multiple | 1 |
| qtyInStock | 0 |
| SKU | 13523371 |
| snippet | Linear Voltage Regulator IC Negative Adjustable 1 Output 1A TO-220-5 |
| Digi-Key Part Number | 2156-LM2991T/LF03-ND |
| Manufacturer Product Number | LM2991T/LF03 |
| Description | LM2991 NEGATIVE LOW DROPOUT ADJU |
| Detailed Description | Linear Voltage Regulator IC Negative Adjustable 1 Output 1A TO-220-5 |
| Category | Integrated Circuits (ICs) |
| Mfr | National Semiconductor |
| Series | - |
| Package | Bulk |
| Product Status | Active |
| Output Configuration | Negative |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | -26V |
| Voltage - Output (Min/Fixed) | -3V |
| Voltage - Output (Max) | -24V |
| Voltage Dropout (Max) | 1V @ 1A |
| Current - Output | 1A |
| Current - Quiescent (Iq) | 0.7 mA |
| Current - Supply (Max) | 5 mA |
| PSRR | 60dB (1kHz) |
| Control Features | Enable |
| Protection Features | Over Temperature, Short Circuit |
| Operating Temperature | -40?C ~ 125?C |
| Mounting Type | Through Hole |
| Package / Case | TO-220-5 Formed Leads |
| Supplier Device Package | TO-220-5 |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Digi-Key | 13523371 |  |  | None | 1 |

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