# LM2991T/LB03 Texas Instruments | Integrated Circuits (ICs) | DigiKey

**Manufacturer:** Texas Instruments  
**MPN:** `LM2991T-LB03`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Texas Instruments |
| Manufacturer name | Texas Instruments |
| Manufacturer | Texas Instruments |
| Extra Product Name | LM2991T/LB03 Texas Instruments \| Integrated Circuits (ICs) \| DigiKey |
| atoms | 1 |
| extendedLead | 6 Weeks |
| extraShipping | 0 |
| moq | 1 |
| MPN | LM2991T-LB03 |
| multiple | 1 |
| packaging | Tube |
| qtyInStock | 111 |
| SKU | 4251198 |
| snippet | Linear Voltage Regulator IC Negative Adjustable 1 Output 1A TO-220-5 |
| tierMinQty1 | 1 |
| tierMinQty2 | 10 |
| tierMinQty3 | 25 |
| tierMinQty4 | 100 |
| tierMinQty5 | 250 |
| tierMinQty6 | 500 |
| tierMinQty7 | 1,000 |
| tierPrice1 | 5.34000 |
| tierPrice2 | 4.79600 |
| tierPrice3 | 4.53400 |
| tierPrice4 | 3.92940 |
| tierPrice5 | 3.72788 |
| tierPrice6 | 3.34500 |
| tierPrice7 | 2.85150 |
| Category | Integrated Circuits (ICs) |
| Mfr | Texas Instruments |
| Series | - |
| Package | Tube |
| 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 |
| Base Product Number | LM2991 |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Digi-Key | 4251198 | 5.34 | 1 | 111 | 1 |

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Structured data: `/python/html6/product/500/110500000/110568000/part_--LM2991TLB03---TexasInstruments--674bf34fbc.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp