component
LM2676SX-ADJ
Public Unreviewedby Ray
Texas Instruments DC-DC Converters, TO-263-7. Datasheet-verified pinout, 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
markdownLM2676SX-ADJ
Texas Instruments · DC-DC Converters · TO-263-7
LM2676SX-ADJ from Texas Instruments, in a TO-263-7. 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 | Switch_output | output | Source pin of the internal high-side DMOS FET; the switching node. Connects to the inductor and the cathode of the external catch (freewheel) diode. |
| 2 | Input | power_in | Supply input to the drain of the internal high-side FET. Connect to the 8-V to 40-V supply with input bypass capacitor CIN; path from VIN to bypass CIN and GND must be as short as possible. |
| 3 | CB | passive | Boot-strap capacitor connection for the high-side gate driver. Connect a high-quality 100-nF capacitor from CB to the Switch_output (VSW) pin. |
| 4 | GND | power_in | Power ground. Connect to system ground; return path for CIN and COUT must be short and low-impedance. |
| 5 | NC | unconnected | No connect. Leave floating or tie per PCB convention. |
| 6 | FB | input | Feedback sense input. For the ADJ version, connect to the midpoint of an external resistor divider from VOUT to GND to program the output voltage (VREF ≈ 1.21 V). Absolute max range −0.3 V to 14 V. |
| 7 | ON/OFF | input | Enable input for the regulator. High (or float) = ON, Low = OFF; pull high or float to enable, drive low for ~50-µA standby shutdown. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TO-263-7 |
| Category | PMIC |
| Pins | 7 |
Ordering variants
Same part, different packaging or reel option.
LM2676SX-ADJLM2676SX-ADJSLM2676SX-ADJTLM2676SX-ADJSD
CAD (KiCad official)
- Symbol:
LM2676SX-ADJ - Footprint:
Package_TO_SOT_SMD:TO-263-7_TabPin8 - 3D model: TO-263-7 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (37 pp, sha256
3390dfbcdda3c59b, 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).