# L4973D3.3-013TR STMicroelectronics | Integrated Circuits (ICs) | DigiKey

**Manufacturer:** STMicroelectronics  
**MPN:** `L4973D3.3-013TR`

The L4973D3.3-013TR is a single-output, step-down switching regulator from STMicroelectronics. It accepts input voltages from 8 to 55 volts and provides a regulated output voltage between 0.5 and 50 volts. This device is capable of delivering up to 3.5 amps of current and features a 20-pin SO T/R package.

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | STMicroelectronics |
| Manufacturer name | STMicroelectronics |
| Manufacturer | STMicroelectronics, ST MICROELECTRONICS |
| Extra Product Name | L4973D3.3-013TR STMicroelectronics \| Integrated Circuits (ICs) \| DigiKey |
| atoms | 1 |
| moq | 1,000 |
| MPN | L4973D3.3-013TR |
| multiple | 1,000 |
| qtyInStock | 0 |
| SKU | 497-3358-2-ND |
| tierMinQty1 | 1 |
| tierMinQty2 | 10 |
| tierMinQty3 | 25 |
| tierMinQty4 | 100 |
| tierMinQty5 | 250 |
| tierMinQty6 | 500 |
| tierPrice1 | 4.27000 |
| tierPrice2 | 3.83200 |
| tierPrice3 | 3.62240 |
| tierPrice4 | 2.97850 |
| tierPrice5 | 2.67260 |
| tierPrice6 | 2.57600 |
| Part Number | L4973D3.3-013TR |
| Product Group | BISS |
| Category | Integrated Circuits (ICs) |
| Mfr | STMicroelectronics |
| Series | - |
| Package | Tape & Reel (TR) |
| Part Status | Active |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable (Fixed) |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 8V |
| Voltage - Input (Max) | 55V |
| Voltage - Output (Min/Fixed) | 0.5V (3.3V) |
| Voltage - Output (Max) | 50V |
| Current - Output | 3.5A |
| Frequency - Switching | 100kHz ~ 300kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40?C ~ 150?C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 20-SO |
| ASIN | B00BTC3PDC, B0748N1HSS, B07ND4THW5 |
| AdultProduct | False |
| Asin | B00BTC3PDC, B0137JSUHU, B0137K07AC, B0748N1HSS, B07ND4THW5 |
| Autographed | False |
| Batteries_required | False |
| Brand | STMicroelectronics |
| Bullet_point | New and Original, OutputCurrent-Max: 3.5 A, OutputTypeRegulators: Fixed/Adjustable, SwitchingFrequency-Max: 300 kHzOperatingTempRange: -40 to +150 °C; DutyCycleMax: 97 %; Efficiency: 90 %; NoofOutputs |
| Case | 1, 10, 1000, 50 |
| Cat | Industrial & Scientific |
| CatId | 16310091 |
| CatTree | 16310091, 16310161, 306506011, 306831011, 306838011, 306910011 |
| ClassificationId | 306506011, 306839011, 306921011 |
| DisplayName | Industrial Electrical, RF, Schottky Diodes |
| Feature | New and Original, Topology: Buck |
| Height | 1200, 150, 243, 500, 56, 75 |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Digi-Key | 497-3358-2-ND | 4.27 | 1 | None | 1000 |
| Win Source | L4973D3.3-013TR |  |  | 10027 | 1 |
| Newark | 79AH3805 | 3.52 | 1 | None | 1000 |
| 4 Star Electronics | L4973D33013TR |  |  | None | 1 |
| AmazonTP | B07ND4THW5 | 62.56 | 1 | None | 1 |
| Digi-Key | 668250 | 6.29 | 1 | None | 1 |
| Verical | L4973D3.3-013TR | 3.626 | 1 | 392 | 3 |
| Mouser | 511-L4973D3.3-013TR | 4.52 | 1 | 285 | 1 |
| Newark | 56P8348 |  |  | None | 1000 |
| st.com | L4973D3.3-013TR | 5.84 | 1 | None | 1 |
| Digi-Key | 3153779 | 5.2 | 1 | None | 1000 |
| Digi-Key | 668251 | 6.29 | 1 | 2349 | 1 |
| TME | L4973D3.3-013TR | 7.25 | 1 | None | 1 |

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