component
LM2671MX-12
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
markdownLM2671MX-12
Texas Instruments · DC-DC Converters · SOIC-8
LM2671MX-12 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 | Bootstrap capacitor connection for the high-side driver; connect a high-quality 100-nF capacitor from CB to the VSW pin. |
| 2 | SS | input | Soft-start pin; a capacitor from SS to GND controls the output voltage ramp, and the pin can be left floating if soft start is not wanted. |
| 3 | SYNC | input | Input that controls the switching clock frequency; if left open-circuited the regulator runs at the internal oscillator frequency, typically 260 kHz. |
| 4 | FB | input | Feedback sense input; for the fixed 12-V version it connects directly to the output capacitor, and the feedback pin voltage is rated −0.3 V to 14 V. |
| 5 | ON/OFF | input | Enable input: high or floating enables the regulator and low disables it, with the ON/OFF pin voltage rated −0.1 V to 6 V. |
| 6 | GND | power_in | Power ground pin that connects to system ground; the path to the CIN ground must be as short as possible. |
| 7 | VIN | power_in | Supply input to the high-side FET collector, connected to the power supply and input bypass capacitor CIN, with the supply range 6.5 V to 40 V recommended and the VIN-to-CIN-to-GND path kept as short as possible. |
| 8 | VSW | output | Source of the internal high-side FET and switching node; it connects to the inductor and the cathode of the external diode, with the switch voltage to ground rated no lower than −1 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM2671MX-12 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm2671mx-12-etched.step/lm2671mx-12-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2671mx-12.step/lm2671mx-12.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (40 pp, sha256
3002d970b17265d0, retrieved 2026-10-08, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(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).