component
LM2596SX-3.3
Public Made by Adomby adom
Texas Instruments DC-DC Converters, TO-263-5. Datasheet-verified pinout, 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-3.3
Texas Instruments · DC-DC Converters · TO-263-5
LM2596SX-3.3 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 to the IC switch regulator with operating range 4.5V to 40V; input bypass capacitor required to minimize voltage transients and provide switching current. |
| 2 | Output | output | Internal switch output with voltage switching between approximately (+VIN − VSAT) and approximately −0.5V at duty cycle of VOUT/VIN; PCB copper area connected to this pin must be minimal to reduce coupling to sensitive circuits. |
| 3 | GND | power_in | Circuit ground reference. |
| 4 | Feedback | input | Feedback input pin that detects stable output voltage to complete feedback loop for output voltage regulation; typical feedback voltage 1.23V for adjustable version. |
| 5 | ON/OFF | input | Logic input to control regulator shutdown; pulling below approximately 1.3V threshold enables regulator operation, pulling above 1.3V up to 25V maximum disables regulator with standby quiescent current typically 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-3.3 - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lm2596sx-3-3-etched.step/lm2596sx-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2596sx-3-3.step/lm2596sx-3-3.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).