component

LM2596R-12

Public Made by Adom

by adom

HTC Korea TAEJIN Tech DC-DC Converters, TO-263-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs lm2596r-12: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STE… · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
lm2596r-12-etched.fit.json lm2596r-12: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
lm2596r-12-etched.glb lm2596r-12: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STE… · Ray
lm2596r-12-etched.step lm2596r-12: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STE… · Ray
lm2596r-12.glb fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
lm2596r-12.kicad_mod fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
lm2596r-12.kicad_sym add symbol pin "6" for the exposed thermal pad: the footprint carries the pad and the symbol had none, so it reached no… · Ray
lm2596r-12.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
lm2596r-12.step fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
package.json Publish 0.2.0 · Ray
pads.json add symbol pin "6" for the exposed thermal pad: the footprint carries the pad and the symbol had none, so it reached no… · Ray
page.json lm2596r-12: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STE… · Ray
README.md lm2596r-12: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

LM2596R-12

HTC Korea TAEJIN Tech · DC-DC Converters · TO-263-5

LM2596R-12 from HTC Korea TAEJIN Tech, 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 supply for the step-down regulator. Absolute max 45V, operating up to 40V. Requires a suitable input bypass capacitor (typ. 470uF/50V aluminum electrolytic) to minimize voltage transients and supply the switching currents.
2 VOUT output Emitter of the internal 3A NPN switch; connects to the external inductor and catch-diode cathode of the buck power stage. Typical saturation voltage Vsat ~1.16V at 3A. PCB area on this node should be minimized to reduce coupling to sensitive circuitry.
3 GND power_in Circuit ground return for the regulator. Should tie to the ground plane via a short, low-inductance path close to the input and output capacitor grounds.
4 FEEDBACK input Senses the regulated output voltage to close the control loop. In the fixed 12V version, an internal resistor divider (R2, R1) scales VOUT to the internal 1.23V reference at the error amplifier non-inverting input. Connect this pin directly to the regulated 12V output node. Feedback bias current is typically 12nA.
5 ON/OFF input TTL-compatible active-high shutdown input. Threshold ~1.3V typ; VIH >= 2.0V forces the regulator OFF (standby quiescent current typ 80uA), VIL <= 0.6V or left open keeps the regulator ON. Input voltage must be within -0.3V to +Vin. Tie to GND for always-on operation.

Key specifications

Parameter Value
Manufacturer HTC Korea TAEJIN Tech
Package TO-263-5
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • LM2596R-12
  • LM2596T-12
  • LM2596DP-12

The extractor listed these alongside LM2596R-12, but they are different parts with different electrical characteristics. Do not order them as substitutes.

  • LM2596R-ADJ
  • LM2596R-3.3
  • LM2596R-5.0
  • LM2596T-ADJ
  • LM2596T-3.3
  • LM2596T-5.0
  • LM2596DP-ADJ
  • LM2596DP-3.3
  • LM2596DP-5.0

CAD (KiCad official)

  • Symbol: LM2596R-12
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5 (KiCad packages3D, STEP)
  • 3D model files: lm2596r-12-etched.step / lm2596r-12-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2596r-12.step / lm2596r-12.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm2596r-12.step 180 KB You want the bare part, or you mark your own boards.
lm2596r-12-etched.step 2.0 MB You want the part with LM2596R-12 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 527 faces against 135 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: HTC Korea TAEJIN Tech datasheet (8 pp, sha256 c89f43dda8481acd, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF