component
LM2596SX-12
Public Made by Adomby adom
Texas Instruments DC-DC Converters, TO-263-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownLM2596SX-12
Texas Instruments · DC-DC Converters · TO-263-5
LM2596SX-12 from Texas Instruments, in a TO-263-5. 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 | VIN | power_in | Positive input power supply for the IC switching regulator; a suitable input bypass capacitor must be placed on this pin to minimize voltage transients and provide the switching current needed by the regulator. |
| 2 | OUTPUT | output | Internal switch output that switches between approximately (+VIN − VSAT) and approximately −0.5V with duty cycle VOUT/VIN; PCB copper area connected to this pin must be minimized to reduce coupling with sensitive circuits. |
| 3 | GND | power_in | Circuit ground connection. |
| 4 | FEEDBACK | input | Feedback input that senses the output voltage to complete the feedback loop. |
| 5 | ON/OFF | input | Logic control input allowing shutdown of the switching regulator; pulling below approximately 1.3V turns on the regulator, pulling to 1.3V or above (maximum 25V) shuts it down, reducing input current to approximately 80μA. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TO-263-5 |
| Category | Power Management (PMIC) |
| Pins | 6 |
CAD (KiCad official)
- Symbol:
LM2596SX-12 - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lm2596sx-12-etched.step/lm2596sx-12-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2596sx-12.step/lm2596sx-12.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (46 pp, sha256
db4b7ff7ba5182ab, 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).