LM2672MX-5.0
Public Unreviewedby Ray
Texas Instruments LM2672MX 5 0 NOPB DC-DC Converters, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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README
markdownLM2672MX-5.0
Texas Instruments · DC-DC Converters · SOIC-8
LM2672MX-5.0 from Texas Instruments, in a SOIC-8. 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 | CB | passive | Boot-strap capacitor connection for the high-side driver. Connect a high-quality 100-nF capacitor from CB to VSW. |
| 2 | SS | input | Soft-start capacitor pin. Connect a capacitor from this pin to GND to control the output voltage ramp. May be left floating if the soft-start feature is not required. |
| 3 | SYNC | input | External synchronization input for the switching clock frequency. If left open-circuited, the regulator switches at the internal oscillator frequency, typically 260 kHz. |
| 4 | FB | input | Feedback sense input pin. For the fixed 5-V version, connect this pin directly to the output capacitor. VFB absolute max -0.3 V to 14 V. |
| 5 | ON/OFF | input | Enable input to the voltage regulator. High = ON and low = OFF. Pull high or float to enable the regulator. VSH range -0.1 V to 6 V. |
| 6 | GND | power_in | Power ground pin. Connect to system ground. Path between CIN, COUT and this pin must be as short as possible. |
| 7 | VIN | power_in | Supply input pin to the collector of the internal high-side FET. Connect to the power source and input bypass capacitor CIN. Operating range 6.5 V to 40 V (absolute max 45 V). |
| 8 | VSW | output | Source pin of the internal high-side FET; switching node. Connect to the inductor and to the cathode of the external catch diode. Absolute-max switch voltage to ground -1 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | PMIC |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
LM2672MX-5.0LM2672MX-5.0M-5.0LM2672MX-5.0N-5.0LM2672MX-5.0SD-5.0
CAD (KiCad official)
- Symbol:
LM2672MX-5.0 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
lm2672mx-5-0.step |
122 KB | You want the bare part, or you mark your own boards. |
lm2672mx-5-0-etched.step |
2.0 MB | You want the part with LM2672MX-5.0 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 516 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (35 pp, sha256
93f2282c1e050e12, 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).