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LM2596SX-3.3-JSM

Public Made by Adom

by adom

JSMSEMI DC-DC Converters, TO-263-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)lm2596sx-3.3-jsmfactory-2.0.0extractor-text
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LM2596SX-3.3-JSM

JSMSEMI · DC-DC Converters · TO-263-5

LM2596SX-3.3-JSM from JSMSEMI, in a TO-263-5. 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 VIN power_in Supply input pin requiring a 4.5V to 40V DC source (60V for HV types), with a large capacitor placed between this pin and ground to suppress supply noise.
2 OUTPUT output Power switch output pin, a switching node that supplies the output load.
3 GND power_in Ground pin, which should be placed on the ground return path away from the Schottky diode output loop to avoid switching current spike noise; the metal tab is also GND.
4 FEEDBACK input Voltage feedback pin that senses the output voltage through an external resistor divider, with a feedback threshold voltage of 1.23V.
5 ON_OFF input Enable pin where a low level enables the chip and a high level shuts it off, defaulting to low when floating.
6 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer JSMSEMI
Package TO-263-5
Category Power Management (PMIC)
Pins 6

CAD (KiCad official)

  • Symbol: LM2596SX-3.3-JSM
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5 (KiCad packages3D, STEP)
  • 3D model files: lm2596sx-3-3-jsm-etched.step / lm2596sx-3-3-jsm-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2596sx-3-3-jsm.step / lm2596sx-3-3-jsm.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: JSMSEMI datasheet (10 pp, sha256 a271e578a0d6d8e7, retrieved 2026-10-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (vision), consensus claude-opus-5-5 (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).

Datasheet PDF