# L7981ATR STMicroelectronics | Integrated Circuits (ICs) | DigiKey

**Manufacturer:** STMicroelectronics  
**MPN:** `L7981ATR`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | STMicroelectronics |
| Manufacturer name | STMicroelectronics |
| Manufacturer | STMicroelectronics, ST MICROELECTRONICS |
| CategoryL1 | Integrated Circuits (ICs) |
| CategoryL2 | Power Management (PMIC) |
| CategoryL3 | Voltage Regulators - DC DC Switching Regulators |
| Extra Product Name | L7981ATR STMicroelectronics \| Integrated Circuits (ICs) \| DigiKey |
| atoms | 1 |
| extraShipping | 0 |
| moq | 1 |
| MPN | L7981ATR |
| multiple | 1 |
| packaging | Cut Tape (CT) & Digi-Reel? |
| qtyInStock | 13359 |
| SKU | 2404140 |
| snippet | Buck Switching Regulator IC Positive Adjustable 0.6V 1 Output 3A 8-SOIC (0.154\ |
| tierMinQty1 | 1 |
| tierMinQty2 | 10 |
| tierMinQty3 | 25 |
| tierMinQty4 | 100 |
| tierMinQty5 | 250 |
| tierMinQty6 | 500 |
| tierMinQty7 | 1,000 |
| tierMinQty8 | 2,500 |
| tierPrice1 | 2.38000 |
| tierPrice2 | 2.14100 |
| tierPrice3 | 2.02000 |
| tierPrice4 | 1.72110 |
| tierPrice5 | 1.61608 |
| tierPrice6 | 1.41406 |
| tierPrice7 | 1.17166 |
| tierPrice8 | 1.14345 |
| Part Number | L7981ATR |
| Product Group | BISS |
| Digi-Key Part Number | 497-10722-2-ND - Tape & Reel (TR) |
| Manufacturer Product Number | L7981ATR |
| Description | IC REG BUCK ADJUSTABLE 3A 8HSOP |
| Manufacturer Standard Lead Time | 20 Weeks |
| Detailed Description | Buck Switching Regulator IC Positive Adjustable 0.6V 1 Output 3A 8-SOIC (0.154", 3.90mm Width) Exposed Pad |
| Category | Integrated Circuits (ICs) |
| Mfr | STMicroelectronics |
| Series | - |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4.5V |
| Voltage - Input (Max) | 28V |
| Voltage - Output (Min/Fixed) | 0.6V |
| Voltage - Output (Max) | 28V |
| Current - Output | 3A |
| Frequency - Switching | 250kHz ~ 1MHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40?C ~ 150?C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) Exposed Pad |
| Supplier Device Package | 8-HSOP |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Digi-Key | 2404140 | 2.38 | 1 | 13359 | 1 |
| Newark | 45AC7276 | 2.03 | 1 | None | 1 |
| Win Source | L7981ATR |  |  | 480 | 1 |
| Future Electronics | 5002342 | 0.84 | 1 | None | 2500 |
| Newark | 90R8994 |  |  | None | 2500 |
| Digi-Key | 2404142 | 2.17 | 1 | None | 1000 |
| Digi-Key | 2404144 | 2.38 | 1 | None | 1 |
| st.com | L7981ATR | 1.77 | 1 | None | 1 |
| electromaker.io | 511-L7981ATR | 1.68 | 1 | 11443 | 1 |
| TME | L7981ATR |  |  | None | 1 |

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