component
LM2679SX-ADJ
Public Made by Adomby adom
Texas Instruments DC-DC Converters, TO-263-7. 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
markdownLM2679SX-ADJ
Texas Instruments · DC-DC Converters · TO-263-7
LM2679SX-ADJ from Texas Instruments, in a TO-263-7. 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 | Switch output | output | Source pin of the internal high side FET; this is a switching node; attach to inductor and external diode cathode. |
| 2 | Input | power_in | Supply input pin to high side FET collector; connect to power supply (8-40V) and input bypass capacitors; path from VIN to bypass capacitor and GND must be as short as possible. |
| 3 | CB | input | Bootstrap capacitor connection for high-side driver; connect 100-nF capacitor from this pin to switch output (VSW). |
| 4 | GND | power_in | Power ground pin; connect to system ground and ground pins of input and output capacitors; path to input bypass capacitor must be as short as possible. |
| 5 | Current adjust | input | Current limit adjust pin; connect resistor from this pin to GND to set peak current limit over range of 3A to 7A. |
| 6 | FB | input | Feedback sense input pin (−0.3V to 14V); connect to midpoint of feedback divider for adjustable version or directly to output capacitor for fixed versions. |
| 7 | SS | input | Soft-start pin (−0.1V to 6V); connect capacitor from this pin to GND to control output voltage ramp or leave floating if feature not needed. |
| 8 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TO-263-7 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM2679SX-ADJ - Footprint:
Package_TO_SOT_SMD:TO-263-7_TabPin8 - 3D model: TO-263-7 (KiCad packages3D, STEP)
- 3D model files:
lm2679sx-adj-etched.step/lm2679sx-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2679sx-adj.step/lm2679sx-adj.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (38 pp, sha256
e875ecde9bd514b4, retrieved 2026-10-07, 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).