component
LM3671MF-3.3
Public Unreviewedby Ray
Texas Instruments LM3671MF 3 3 NOPB DC-DC Converters, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM3671MF-3.3
Texas Instruments · DC-DC Converters · SOT-23-5
LM3671MF-3.3 from Texas Instruments, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | power_in | Power supply input, 2.7 V to 5.5 V. Connect to the input filter capacitor (4.7 µF typical). |
| 2 | GND | power_in | Ground pin. Serves as the device reference and power return. |
| 3 | EN | input | Enable digital input. Device is in shutdown when V(EN) < 0.4 V and enabled when V(EN) > 1 V. Do not leave floating. |
| 4 | FB | input | Feedback analog input. For the fixed-3.3-V version, connect directly to the output filter capacitor; internal resistor dividers set the output voltage (external dividers not needed on fixed versions). |
| 5 | SW | output | Switching node. Connection to the internal PFET switch and NFET synchronous rectifier; connect the external inductor (typically 2.2 µH) between SW and VOUT. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | PMIC |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
LM3671MF-3.3LM3671MF-3.3MFXLM3671MF-3.3TLLM3671MF-3.3TLXLM3671MF-3.3SDLM3671MF-3.3SDX
CAD (KiCad official)
- Symbol:
LM3671MF-3.3 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (39 pp, sha256
28c9b5f0f4888e8d, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).