component
LM22678TJ-5.0
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.
main
LM22678TJ-5.0
Texas Instruments · DC-DC Converters · TO-263-7
LM22678TJ-5.0 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 | SW | output | Switching output of regulator with maximum voltage equal to VIN and minimum voltage of -10V for pulses up to 50ns. |
| 2 | VIN | power_in | Supply input to the regulator with input voltage range of 4.5V to 42V. |
| 3 | BOOT | input | Bootstrap input that provides gate voltage for the high-side NFET with maximum voltage of VSW + 7V. |
| 4 | GND | power_in | Ground pin and system common reference for the regulator. |
| 5 | NC | unconnected | Not electrically connected inside the chip but functions as a thermal conductor. |
| 6 | FB | input | Feedback input for output voltage regulation with absolute maximum voltage from -0.5V to 7V. |
| 7 | EN | input | Enable input used to control regulator start-up and shutdown with precision threshold of 1.6V (falling) and hysteresis of 0.6V. |
| 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:
LM22678TJ-5.0 - Footprint:
Package_TO_SOT_SMD:TO-263-7_TabPin8 - 3D model: TO-263-7 (KiCad packages3D, STEP)
- 3D model files:
lm22678tj-5-0-etched.step/lm22678tj-5-0-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm22678tj-5-0.step/lm22678tj-5-0.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (30 pp, sha256
6d9377233020f9a7, retrieved 2026-09-23, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).
# LM22678TJ-5.0
**Texas Instruments** · DC-DC Converters · TO-263-7
LM22678TJ-5.0 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 | SW | output | Switching output of regulator with maximum voltage equal to VIN and minimum voltage of -10V for pulses up to 50ns. |
| 2 | VIN | power_in | Supply input to the regulator with input voltage range of 4.5V to 42V. |
| 3 | BOOT | input | Bootstrap input that provides gate voltage for the high-side NFET with maximum voltage of VSW + 7V. |
| 4 | GND | power_in | Ground pin and system common reference for the regulator. |
| 5 | NC | unconnected | Not electrically connected inside the chip but functions as a thermal conductor. |
| 6 | FB | input | Feedback input for output voltage regulation with absolute maximum voltage from -0.5V to 7V. |
| 7 | EN | input | Enable input used to control regulator start-up and shutdown with precision threshold of 1.6V (falling) and hysteresis of 0.6V. |
| 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: `LM22678TJ-5.0`
- Footprint: `Package_TO_SOT_SMD:TO-263-7_TabPin8`
- 3D model: TO-263-7 (KiCad packages3D, STEP)
- 3D model files: `lm22678tj-5-0-etched.step` / `lm22678tj-5-0-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm22678tj-5-0.step` / `lm22678tj-5-0.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm22678) (30 pp, sha256 `6d9377233020f9a7`, retrieved 2026-09-23, 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 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-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).
[Datasheet PDF](docs/lm22678tj-5-0-datasheet.pdf)