component
LM2674MX-5.0
Public Unreviewedby Ray
Texas Instruments LM2674MX 5 0 NOPB DC-DC Converters, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads when scrolled away or the tab is hidden.
PCB Footprint
Open full view ↗Loads on click. Unloads when scrolled away or the tab is hidden.
Datasheet
Open in new tab ↗Loads on click. Unloads when scrolled away or the tab is hidden.
README
markdownLM2674MX-5.0
Texas Instruments · DC-DC Converters · SOIC-8
LM2674MX-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 | Bootstrap capacitor connection for the internal high-side driver. Connect a high-quality 470-nF capacitor from CB to VSW to develop the boosted gate drive for the high-side DMOS switch. |
| 2 | NC | unconnected | No-connect pin. Leave floating or tie to a copper pour as convenient; not internally bonded to any circuit. |
| 3 | NC | unconnected | No-connect pin. Leave floating or tie to a copper pour as convenient; not internally bonded to any circuit. |
| 4 | FB | input | Feedback sense input. For the fixed 5-V version, connect this pin directly to the output capacitor (VOUT). Internal reference sets output regulation; feedback bias current is typically 85 nA (adjustable version only). |
| 5 | ON/OFF | input | Active-high enable input for the regulator. High = ON, Low = OFF. Internally pulled up to ~7 V, so the pin may be left floating for always-on operation. Turn-on threshold (rising) typically 1.4 V; input voltage range −0.1 V to 6 V. |
| 6 | GND | power_in | Power ground. Connect to system ground; the ground return of the input bypass capacitor CIN and output capacitor COUT must be as short as possible. |
| 7 | VIN | power_in | Supply input pin, also the drain of the internal high-side DMOS switch. Connect to the input supply (6.5 V to 40 V recommended, 45 V absolute max). Place a low-ESR bypass capacitor (typ. 100 µF) from VIN to GND with the shortest possible path. |
| 8 | VSW | output | Switching node - source of the internal high-side DMOS FET (RDS(on) ≈ 0.25 Ω, 500-mA rated). Connect to the power inductor and the cathode of the external freewheeling (catch) diode. Absolute-max −1 V to VIN. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | PMIC |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
LM2674MX-5.0LM2674MX-5.0MLM2674MX-5.0NLM2674MX-5.0SDLM2674MX-5.0SDX
CAD (KiCad official)
- Symbol:
LM2674MX-5.0 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (35 pp, sha256
4bd5564fd1dd3b8a, 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).