component
LM2676SX-12
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
markdownLM2676SX-12
Texas Instruments · DC-DC Converters · TO-263-7
LM2676SX-12 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 of the internal high-side FET and the switching node, connected to the inductor and the external diode cathode, with the negative swing kept above -1 V per the catch-diode guidance. |
| 2 | Input | input | Power input to the high-side FET collector and internal circuits, which must operate within 8 V to 40 V and be bypassed close to this pin with CIN. |
| 3 | CB | input | Bootstrap capacitor connection for the high-side driver, with the capacitor connected between CB and Switch_output (the pin table specifies 100 nF, while section 6.3.3 recommends 0.01 µF). |
| 4 | GND | power_in | Power ground connected to system ground, with the path to CIN and COUT grounds kept as short as possible. |
| 5 | NC | unconnected | No internal connection; leave this pin unconnected. |
| 6 | FB | input | Feedback sense input that must be connected directly to the regulated output for the fixed-output versions (including 12 V) and kept free of inductor flux coupling. |
| 7 | ON/OFF | input | Enable input where high or floating enables the regulator and pulling below 0.8 V fully shuts it down, with the on-state voltage not to exceed the 6 V absolute maximum when electrically driven. |
| 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:
LM2676SX-12 - Footprint:
Package_TO_SOT_SMD:TO-263-7_TabPin8 - 3D model: TO-263-7 (KiCad packages3D, STEP)
- 3D model files:
lm2676sx-12-etched.step/lm2676sx-12-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2676sx-12.step/lm2676sx-12.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (40 pp, sha256
e66be2b2a64d67e2, retrieved 2026-10-08, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).