component
LM22670MRX-ADJ
Public Made by Adomby adom
Texas Instruments DC-DC Converters, SOIC-8-EP. 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
markdownLM22670MRX-ADJ
Texas Instruments · DC-DC Converters · SOIC-8-EP
LM22670MRX-ADJ from Texas Instruments, in a SOIC-8-EP. 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 | BOOT | input | Bootstrap input supplies gate-drive voltage for high-side NFET; voltage rating VSW to VSW + 7V absolute maximum. |
| 2 | NC | unconnected | Not connected electrically inside chip; provides thermal conductor path to PCB. |
| 3 | RT/SYNC | input | Input for switching frequency adjustment via external resistor (25kΩ to 200kΩ range sets 200kHz to 1MHz) or external synchronization clock (maximum 1MHz). |
| 4 | FB | input | Feedback input to error amplifier; reference voltage 1.285V typical for ADJ version with ±1.5% accuracy over temperature. |
| 5 | EN | input | Precision enable input controls regulator ON/OFF with falling threshold 1.6V typical and 0.6V hysteresis; integrated UVLO and 6µA internal pullup. |
| 6 | GND | power_in | Ground input to regulator; system common reference point, connect to PCB ground plane. |
| 7 | VIN | power_in | Input voltage supply to regulator; rated 4.5V to 42V with internal UVLO protection (rising 4.3V typical, falling 3.9V typical). |
| 8 | SW | output | Switching output provides rectangular waveform at constant switching frequency swinging from approximately 0V to VIN. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8-EP |
| Category | Power Management (PMIC) |
| Pins | 9 |
CAD (KiCad official)
- Symbol:
LM22670MRX-ADJ - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm - 3D model: SOIC-8-EP (KiCad packages3D, STEP)
- 3D model files:
lm22670mrx-adj-etched.step/lm22670mrx-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm22670mrx-adj.step/lm22670mrx-adj.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (38 pp, sha256
5d2cd199b79fcc67, 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).