component
LM2672MX-3.3
Public Made by Adomby adom
Texas Instruments DC-DC Converters, SOIC-8. Pinout cross-checked by two models against the datasheet, 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
markdownLM2672MX-3.3
Texas Instruments · DC-DC Converters · SOIC-8
LM2672MX-3.3 from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | CB | input | Boot-strap capacitor connection for high-side driver; connect a high quality 100-nF capacitor from CB to VSW pin. |
| 2 | SS | input | Soft-start capacitor pin; connect a capacitor from this pin to GND to control the output voltage ramp. |
| 3 | SYNC | input | Synchronization input that allows control of the switching clock frequency, defaulting to typically 260 kHz when left open-circuited. |
| 4 | FB | input | Feedback sense input pin; connect to the midpoint of feedback divider to set VOUT for adjustable version or connect directly to the output capacitor for fixed output version. |
| 5 | ON/OFF | input | Enable input to the voltage regulator; high = ON and low = OFF, pull high or float to enable. |
| 6 | GND | power_in | Power ground pins; connect to system ground and ground pins of CIN and COUT with path from VIN pin to high frequency bypass CIN and GND as short as possible. |
| 7 | VIN | power_in | Supply input pin to collector pin of the high side FET; connect to power supply and input bypass capacitors CIN with path as short as possible. |
| 8 | VSW | output | Source pin of the internal high side FET; this is a switching node attached to an inductor and the cathode of the external diode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM2672MX-3.3 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm2672mx-3-3-etched.step/lm2672mx-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2672mx-3-3.step/lm2672mx-3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (39 pp, sha256
4465557d2db983f5, retrieved 2026-10-01, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).