Manufacturer package reference image
Order the LM317MQDCYR - 500-mA, 40-V, adjustable linear voltage regulator for automotive applications | DCY | 4 | -40 to 125 from Texas Instruments.
Key Specifications
| Complete manufacturer part number | LM317MQDCYR |
|---|---|
| Manufacturer | Texas Instruments |
| Description | Order the LM317MQDCYR - 500-mA, 40-V, adjustable linear voltage regulator for automotive applications | DCY | 4 | -40 to 125 from Texas Instruments. |
| Package / case | SOT-223 (DCY) |
| Product category | Voltage regulators |
| Series / Family | LM317M |
| Power supply | Up to 15 V |
| Pins | 4 |
| TI package code | DCY |
| Mounting Type | Surface Mount |
| Type | LDO regulator |
| Output Current | 500 mA |
| Output Voltage | Adjustable 1.2-37 V |
| Rating | Automotive |
| Vin (max) (V) | 37, 40 |
| Vin (min) (V) | 2.5, 3 |
| Iout (max) (A) | 0.5 |
| Output options | Adjustable Output, Fixed Output |
| Vout (max) (V) | 37 |
| Vout (min) (V) | 1.25 |
| Noise (µVrms) | 38 |
| PSRR at 100 KHz (dB) | 22 |
| Iq (typ) (mA) | 3.5 |
| Thermal resistance θJA (°C/W) | 60 |
| Load capacitance (min) (µF) | 0 |
| Regulated outputs (#) | 1 |
| Accuracy (%) | 2 |
| Dropout voltage (Vdo) (typ) (mV) | 2000 |
| Operating temperature (exact ordering record) | -40 to 125 °C |
| Standard quantity / packing | 2,500 | LARGE T&R |
| In stock | 1,567 pcs |
| Unit price | Request a quote |
| Lead time | To be confirmed |
Technical documentation and image source
TI exact ordering page and explicitly identified base product page verified on 2026-11-04. Electrical fields refer to the named base product. Package and temperature refer to the exact ordering code. Package reference image is not a stock-lot photograph. Consult the datasheet for electrical limits and test conditions.
Manufacturer package reference image for SOT-223 (DCY). Confirm electrical pin functions in the datasheet. Actual lot appearance and top marking require current-lot confirmation.
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Part of the TI LDO series.
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