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LM22678TJ-ADJ

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Texas Instruments DC-DC Converters, TO-263-7. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)lm22678tj-adjfactory-2.0.0extractor-text

Verified LM22678TJ-ADJ

by Ray · last 6 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

6 Nov 2026RayPublished by the parts factory: tier mfr, 8 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: LM22678TJ-ADJ · TO-263-7 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 29-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: TO-263-7_TabPin8
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-zpzbzp5b/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ lm22678tj-adj.kicad_sym✓ lm22678tj-adj.kicad_mod✓ lm22678tj-adj.step
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Contents

README

markdown

LM22678TJ-ADJ

Texas Instruments · DC-DC Converters · TO-263-7

LM22678TJ-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 SW output Switching output of the regulator.
2 VIN power_in Supply input to the regulator.
3 BOOT input Bootstrap input that provides the gate voltage for the high-side NFET.
4 GND power_in Ground input to the regulator and system common, the system ground pin.
5 NC unconnected Not electrically connected inside the chip; the pin does function as a thermal conductor.
6 FB input Feedback input to the regulator.
7 EN input Enable input used to control regulator start-up and shutdown.
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

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
VFB Feedback Voltage VFB 1.266 1.285 1.304 V VIN = 4.7 V to 42 V 5
VFB Feedback Voltage over temperature VFB 1.259 1.311 V VIN = 4.7 V to 42 V, -40°C ≤ TJ ≤ 125°C 5
Input Supply Voltage VIN 4.5 42 V 4
Junction Temperature Range TJ -40 125 °C 4
Quiescent Current IQ 3.4 mA VFB = 5 V 5
Quiescent Current over temperature IQ 6 mA VFB = 5 V, -40°C ≤ TJ ≤ 125°C 5
Standby Quiescent Current ISTDBY 25 40 µA EN Pin = 0 V 5
Current Limit ICL 6 7.1 8.4 A 5
Current Limit over temperature ICL 5.75 8.75 A -40°C ≤ TJ ≤ 125°C 5
Output Leakage Current IL 0.2 2 µA VIN = 42 V, EN Pin = 0 V, VSW = 0 V 5
Output Leakage Current IL 0.1 3 µA VSW = -1 V 5
Switch On-Resistance RDS(ON) 0.1 0.14 Ω 5
Switch On-Resistance over temperature RDS(ON) 0.2 Ω -40°C ≤ TJ ≤ 125°C 5
Oscillator Frequency fO 500 kHz 5
Oscillator Frequency over temperature fO 400 600 kHz -40°C ≤ TJ ≤ 125°C 5
Minimum Off-time TOFFMIN 200 ns 5
Minimum Off-time over temperature TOFFMIN 100 300 ns -40°C ≤ TJ ≤ 125°C 5
Minimum On-time TONMIN 100 ns 5
Feedback Bias Current IBIAS 230 nA VFB = 1.3 V (ADJ Version Only) 5
Enable Threshold Voltage (falling) VEN 1.6 V Falling 5
Enable Threshold Voltage (falling) over temperature VEN 1.3 1.9 V Falling, -40°C ≤ TJ ≤ 125°C 5
Enable Threshold Hysteresis VENHYST 0.6 V 5
Enable Input Current IEN 6 µA EN Input = 0 V 5
Thermal Shutdown Threshold TSD 150 °C 5
VIN to GND VIN 43 V 4
EN Pin Voltage VEN -0.5 6 V 4
SW to GND (dc) VSW -5 V dc voltage; VIN 4
BOOT Pin Voltage VBOOT 7 V VSW + 7 V 4
FB Pin Voltage VFB -0.5 7 V 4
Junction Temperature TJ 150 °C 4
Storage temperature range Tstg -65 150 °C 4
Junction-to-ambient thermal resistance RθJA 22 °C/W 4

CAD (KiCad official)

  • Symbol: LM22678TJ-ADJ
  • Footprint: Package_TO_SOT_SMD:TO-263-7_TabPin8
  • 3D model: TO-263-7 (KiCad packages3D, STEP)
  • 3D model files: lm22678tj-adj-etched.step / lm22678tj-adj-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm22678tj-adj.step / lm22678tj-adj.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (29 pp, sha256 15af02f36cd8d5ce, retrieved 2026-11-05, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF