component
LM22670TJ-ADJ
Public Made by Adomby adom
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
markdownLM22670TJ-ADJ
Texas Instruments · DC-DC Converters · TO-263-7
LM22670TJ-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 | SW | output | Switching output of regulator that oscillates between 0V and VIN at the switching frequency, driving the external freewheeling diode and power inductor in the buck converter topology. |
| 2 | VIN | power_in | Supply input to the regulator with operating range 4.5V to 42V and absolute maximum rating of 43V; bypass with low-ESR ceramic capacitors. |
| 3 | BOOT | input | Bootstrap capacitor input providing gate drive voltage for the high-side N-channel power MOSFET; requires 10nF ceramic capacitor connected between BOOT and SW pins with absolute maximum voltage of VSW + 7V. |
| 4 | GND | power_in | System ground reference and return path for all regulator currents; connect to exposed thermal pad on package bottom with multiple vias for heat dissipation. |
| 5 | RT/SYNC | input | Switching frequency adjustment or external synchronization input supporting three modes: float for 500kHz internal oscillator, 25kΩ-200kΩ resistor to ground for 200kHz-1MHz frequency adjustment, or external clock for up to 1MHz synchronization; absolute voltage range -0.5V to 7V. |
| 6 | FB | input | Feedback input to error amplifier for closed-loop voltage regulation; internal reference voltage is 1.285V typical for -ADJ version with ±1.5% accuracy over -40°C to 125°C; absolute voltage range -0.5V to 7V. |
| 7 | EN | input | Enable input for regulator on/off control and power sequencing with precision threshold of 1.6V typical; regulator turns on when EN exceeds 1.6V with 0.6V hysteresis; absolute voltage range -0.5V to 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:
LM22670TJ-ADJ - Footprint:
Package_TO_SOT_SMD:TO-263-7_TabPin8 - 3D model: TO-263-7 (KiCad packages3D, STEP)
- 3D model files:
lm22670tj-adj-etched.step/lm22670tj-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm22670tj-adj.step/lm22670tj-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).