component
LM2586SX-ADJ
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
markdownLM2586SX-ADJ
Texas Instruments · DC-DC Converters · TO-263-7
LM2586SX-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 | ON/OFF (FREQ ADJ) | input | External shutdown / frequency-adjust pin (absolute max −0.4V ≤ VSH ≤ 6V); sourcing ≥3V into this pin (typical threshold 1.6V, min 1.0V/0.8V, max 2.2V/2.4V, typical pin current 40µA) shuts the device down; alternatively a resistor from this pin to ground sets the switching frequency from 100kHz (pin open) up to 200kHz (RSET=22kΩ); leave floating through an isolation diode for normal operation. |
| 4 | GND | power_in | Ground/return pin for the IC; a Schottky diode can be connected between the Switch pin (5) and this ground pin (4) to clamp negative ringing on the Switch node from dropping below −0.4V. |
| 5 | SWITCH | output | Collector of the internal 3A NPN power switch; absolute maximum −0.4V ≤ VSW ≤ 65V (recommended 0V ≤ VSW ≤ 60V); switch current is internally limited (typical 4.0A, min 3.0A, max 7.0A) with a typical saturation voltage of 0.45V at 3A; connects to the external inductor/transformer primary. |
| 6 | SYNC | input | Frequency-synchronization input, absolute maximum −0.4V ≤ VSYNC ≤ 2V; a negative-going pulse applied here (threshold typically 0.75V at 200kHz, pin current ~100µA typ/200µA max) synchronizes the internal oscillator to an external clock so multiple devices can run at the same switching frequency. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TO-263-7 |
| Category | Power Management (PMIC) |
| Pins | 4 |
CAD (KiCad official)
- Symbol:
LM2586SX-ADJ - Footprint:
Package_TO_SOT_SMD:TO-263-7_TabPin8 - 3D model: TO-263-7 (KiCad packages3D, STEP)
- 3D model files:
lm2586sx-adj-etched.step/lm2586sx-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2586sx-adj.step/lm2586sx-adj.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (44 pp, sha256
062506d4c1c2d784, retrieved 2026-09-24, 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).